Colorado's 4th congressional district

Colorado's 4th congressional district is a congressional district in the U.S. state of Colorado. Located in the eastern part of the state, the district encompasses most of the rural Eastern Plains, as well as portions of the Colorado Front Range, including Loveland, Highlands Ranch, Castle Rock, and Parker.

Colorado's 4th congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Greg Lopez R–Elizabeth
Distribution	72.9% urban[1] 27.1% rural
Population (2022)	748,891[2]
Median household income	$108,087[3]
Ethnicity	75.8% White 13.6% Hispanic 4.5% Two or more races 3.5% Asian 1.7% Black 0.9% other
Cook PVI	R+13[4]

The district is currently represented by Republican Greg Lopez, who won a special election on June 25, 2024, following the resignation of Republican Ken Buck. With a Cook Partisan Voting Index rating of R+13, it is the most Republican district in Colorado.^[4] No Democrat has received more than 40% of the vote as a U.S. House candidate in the district since 2010.

History

1990s

Following the 1990 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa, Kit Carson, Larimer, Las Animas, Lincoln, Logan, Morgan, Otero, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties, as well as portions of Adams and Arapahoe counties.

2000s

Following the 2000 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Larimer, Lincoln, Logan, Morgan, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties, as well as portions of Boulder, and Otero counties.

2010s

Following the 2010 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa, Kit Carson, Las Animas, Lincoln, Logan, Morgan, Otero, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties. The district also includes portions of Adams, Arapahoe, Boulder and Douglas counties and very little portions of Larimer County.

Characteristics

This district consists mainly of the area of Colorado that is part of the Great Plains region of the United States. It is largely rural. The only large populated places in the district are Loveland, Highlands Ranch, Castle Rock, and Parker. Until the 2010s redistricting, Fort Collins was the largest city in the district and provided a large Democratic base, making the district somewhat competitive: before the 2020 redistricting, Greeley was the largest city in the district but has since been moved to the 8th district.

While the 4th takes in some suburbs of the Democratic-leaning Denver metropolitan area, the 4th takes in Douglas County, the most Republican region in the area. However, it is still far more friendly to the Democrats than the other counties in the district (especially in blue-leaning Highlands Ranch and Lone Tree) and is the only area in the district with any Democratic support of real significance. On the other hand, the district takes in some of the most Republican counties in Colorado, such as Washington, Kit Carson, and Logan, where Democrats rarely exceed even 20 percent of the vote.

Historically, the district has been Republican-leaning, though Marilyn Musgrave won relatively narrow victories in 2004 and 2006 due to her Democratic opponents' strength in Fort Collins. Musgrave had to rely on strong performances in more conservative Greeley to hold onto her seat. In 2008, Musgrave lost reelection to Betsy Markey, who became the first Democrat to represent the district since the early 1970s. Markey was defeated in 2010 by Republican Cory Gardner, and the district was made more Republican in redistricting due to the removal of Fort Collins; no Democratic nominee has won more than 40% of the vote since she left office.

George W. Bush received 58% of the vote in this district in 2004. John McCain narrowly carried the district in 2008 with 50% of the vote.

The district is currently represented by Republican Greg Lopez, who won a special election on June 25, 2024, following the resignation of Republican Ken Buck. Lopez is not running for re-election in the November 5, 2024 election, however. Colorado congressional district 3 incumbent Lauren Boebert is the Republican nominee. The Democratic nominee is former AFL-CIO speechwriter Trisha Calvarese.^[5][6]

Composition

#	County	Seat	Population
1	Adams	Brighton	533,365
5	Arapahoe	Littleton	656,061
9	Baca	Springfield	3,344
11	Bent	Las Animas	5,681
17	Cheyenne	Cheyenne Wells	1,727
25	Crowley	Ordway	5,636
35	Douglas	Castle Rock	383,906
39	Elbert	Kiowa	28,806
41	El Paso	Colorado Springs	744,215
61	Kiowa	Eads	1,384
63	Kit Carson	Burlington	6,994
69	Larimer	Fort Collins	370,771
73	Lincoln	Hugo	5,480
75	Logan	Sterling	20,619
87	Morgan	Fort Morgan	29,524
95	Phillips	Holyoke	4,476
99	Prowers	Lamar	11,751
115	Sedgwick	Julesburg	2,299
121	Washington	Akron	4,855
123	Weld	Greeley	359,442
125	Yuma	Wray	9,862

Cities of 10,000 people or more

• Highlands Ranch – 105,631
• Loveland – 76,378
• Castle Rock – 73,158
• Parker – 58,512
• Windsor – 35,788
• Lone Tree – 14,253
• Sterling – 13,735
• The Pinery – 11,311
• Castle Pines – 11,036

2,500 – 10,000 people

• Roxborough Park – 9,416
• Stonegate – 9,072
• Lamar – 7,687
• Severance – 7,683
• Eaton – 5,802
• Brush – 5,339
• Meridian – 4,786
• Castle Pines Village – 4,327
• Sierra Ridge – 3,490
• Yuma – 3,456
• Ponderosa Park – 3,334
• Strasburg – 3,307
• Meridian Village – 3,202
• Burlington – 3,172
• Acres Green – 2,922
• Bennett – 2,862
• Stepping Stone – 2,780

Voting

Election results from presidential races^[7]

Election results
Year	Office	Results
2000	President	Bush 57–37%
2004	President	Bush 58–41%
2008	President	McCain 50–49%
2012	President	Romney 59–40%
2016	President	Trump 57–34%
	Senate	Glenn 57–38%
2018	Governor	Stapleton 57.7–38.1%
2020	President	Trump 57–41%
	Senate	Gardner 59–39%
2022	Governor	Ganahl 55–43%
	Senate	O'Dea 57–40%

List of members representing the district

Member	Party	Term duration	Cong ress(es)	Electoral history	District location
District created March 4, 1915
Edward T. Taylor (Glenwood Springs)	Democratic	March 4, 1915 – September 3, 1941	64th 65th 66th 67th 68th 69th 70th 71st 72nd 73rd 74th 75th 76th 77th	Redistricted from the at-large district and re-elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Re-elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Died.
Vacant		September 3, 1941 – December 9, 1941	77th
Robert F. Rockwell (Paonia)	Republican	December 9, 1941 – January 3, 1949	77th 78th 79th 80th	Elected to finish Taylor's term. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost re-election.
Wayne N. Aspinall (Palisade)	Democratic	January 3, 1949 – January 3, 1973	81st 82nd 83rd 84th 85th 86th 87th 88th 89th 90th 91st 92nd	Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Lost renomination.
James Paul Johnson (Fort Collins)	Republican	January 3, 1973 – January 3, 1981	93rd 94th 95th 96th	Elected in 1972. Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Retired.
Hank Brown (Greeley)	Republican	January 3, 1981 – January 3, 1991	97th 98th 99th 100th 101st	Elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Retired to run for U.S. Senator.
Wayne Allard (Loveland)	Republican	January 3, 1991 – January 3, 1997	102nd 103rd 104th	Elected in 1990. Re-elected in 1992. Re-elected in 1994. Retired to run for U.S. Senator.
Bob Schaffer (Fort Collins)	Republican	January 3, 1997 – January 3, 2003	105th 106th 107th	Elected in 1996. Re-elected in 1998. Re-elected in 2000. Retired.
Marilyn Musgrave (Fort Morgan)	Republican	January 3, 2003 – January 3, 2009	108th 109th 110th	Elected in 2002. Re-elected in 2004. Re-elected in 2006. Lost re-election.	2003–2013
Betsy Markey (Fort Collins)	Democratic	January 3, 2009 – January 3, 2011	111th	Elected in 2008. Lost re-election.
Cory Gardner (Yuma)	Republican	January 3, 2011 – January 3, 2015	112th 113th	Elected in 2010. Re-elected in 2012. Retired to run for U.S. Senator.
					2013–2023
Ken Buck (Windsor)	Republican	January 3, 2015 – March 22, 2024	114th 115th 116th 117th 118th	Elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Resigned.
					2023–present
Vacant		March 22, 2024 – July 8, 2024	118th
Greg Lopez (Elizabeth)	Republican	July 8, 2024 – present		Elected to finish Buck's term. Retiring at end of term.

Election results

1914 1916 1918 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1941 (special) 1942 1944 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 (special)

1914

1914 United States House of Representatives elections^[8]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (Incumbent)	26,562	57.83
	Republican	H. J. Baird	15,015	32.69
	Socialist	George Kunkle	4,353	9.48
Total votes			45,930	100.0
	Democratic win (new seat)

1916

1916 United States House of Representatives elections^[9]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	30,926	65.78
	Republican	H. J. Baird	13,397	28.49
	Socialist	Emery D. Cox	2,695	5.73
Total votes			47,018	100.0
	Democratic hold

1918

1918 United States House of Representatives elections^[10]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	22,423	65.72
	Republican	Straud M. Logan	11,695	34.28
Total votes			34,118	100.0
	Democratic hold

1920

1920 United States House of Representatives elections^[11]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	25,994	55.32
	Republican	Merle D. Vincent	20,991	44.68
Total votes			46,985	100.0
	Democratic hold

1922

1922 United States House of Representatives elections^[12]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	30,331	64.26
	Republican	Merle D. Vincent	16,870	35.74
Total votes			47,201	100.0
	Democratic hold

1924

1924 United States House of Representatives elections^[13]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	33,262	65.54
	Republican	Webster S. Whinnery	17,486	34.46
Total votes			50,748	100.0
	Democratic hold

1926

1926 United States House of Representatives elections^[14]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	32,093	66.75
	Republican	Webster S. Whinnery	15,990	33.25
Total votes			48,083	100.0
	Democratic hold

1928

1928 United States House of Representatives elections^[15]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	30,142	58.84
	Republican	William P. Dale	21,089	41.16
Total votes			51,231	100.0
	Democratic hold

1930

1930 United States House of Representatives elections^[16]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	34,536	66.95
	Republican	Webster S. Whinnery	17,051	33.05
Total votes			51,587	100.0
	Democratic hold

1932

1932 United States House of Representatives elections^[17]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	40,736	65.99
	Republican	Richard C. Callen	20,993	34.01
Total votes			61,729	100.0
	Democratic hold

1934

1934 United States House of Representatives elections^[18]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	39,747	67.30
	Republican	Harry McDevitt	17,234	29.18
	Veterans' Party	Gustavis A. Billstrom	1,625	2.75
	Independent	O. W. Daggett	457	0.77
Total votes			59,063	100.0
	Democratic hold

1936

1936 United States House of Representatives elections^[19]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	42,010	65.45
	Republican	John S. Woody	22,175	34.55
Total votes			64,185	100.0
	Democratic hold

1938

1938 United States House of Representatives elections^[20]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	43,596	63.74
	Republican	John S. Woody	24,805	36.26
Total votes			68,401	100.0
	Democratic hold

1940

1940 United States House of Representatives elections^[21]

Party		Candidate	Votes	%
	Democratic	Edward T. Taylor (incumbent)	44,095	59.41
	Republican	Paul W. Crawford	30,126	40.59
Total votes			74,221	100.0
	Democratic hold

1941 (special)

1941 Colorado's 4th congressional district special election^[22]

Party		Candidate	Votes	%
	Republican	Robert F. Rockwell	19,918	54.04
	Democratic	Frank Delaney	16,941	45.96
Total votes			36,859	100.0
	Republican gain from Democratic

1942

1942 United States House of Representatives elections^[23]

Party		Candidate	Votes	%
	Republican	Robert F. Rockwell (incumbent)	28,460	58.75
	Democratic	Elizabeth E. Pellet	19,979	41.25
Total votes			48,439	100.0
	Republican hold

1944

1944 United States House of Representatives elections^[24]

Party		Candidate	Votes	%
	Republican	Robert F. Rockwell (incumbent)	38,671	61.67
	Democratic	John L. Heuschkel	24,039	38.33
Total votes			62,710	100.0
	Republican hold

1946

1946 United States House of Representatives elections^[25]

Party		Candidate	Votes	%
	Republican	Robert F. Rockwell (incumbent)	28,894	58.75
	Democratic	Thomas Matthews	20,290	41.25
Total votes			49,184	100.0
	Republican hold

1948

1948 United States House of Representatives elections^[26]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall	34,695	51.86
	Republican	Robert F. Rockwell (incumbent)	32,206	48.14
Total votes			66,901	100.0
	Democratic gain from Republican

1950

1950 United States House of Representatives elections^[27]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	35,797	57.30
	Republican	Jack Evans	26,674	42.70
Total votes			62,471	100.0
	Democratic hold

1952

1952 United States House of Representatives elections^[28]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	39,676	50.02
	Republican	Howard M. Shults	39,647	49.98
Total votes			79,323	100.0
	Democratic hold

1954

1954 United States House of Representatives elections^[29]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	34,294	53.49
	Republican	Charles E. Wilson	29,818	46.51
Total votes			64,112	100.0
	Democratic hold

1956

1956 United States House of Representatives elections^[30]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	48,489	61.76
	Republican	Hugh Caldwell	30,026	38.24
Total votes			78,515	100.0
	Democratic hold

1958

1958 United States House of Representatives elections^[31]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	43,785	63.61
	Republican	J. R. "Dick" Wells	25,048	36.39
Total votes			68,833	100.0
	Democratic hold

1960

1960 United States House of Representatives elections^[32]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	58,731	68.54
	Republican	Charles P. Casteel	26,960	31.46
Total votes			85,691	100.0
	Democratic hold

1962

1962 United States House of Representatives elections^[33]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	42,462	58.65
	Republican	Leo L. Sommerville	29,943	41.35
Total votes			72,405	100.0
	Democratic hold

1964

1964 United States House of Representatives elections^[34]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	106,685	63.02
	Republican	Edwin S. Lamm	62,617	36.98
Total votes			169,302	100.0
	Democratic hold

1966

1966 United States House of Representatives elections^[35]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	84,107	58.61
	Republican	James Paul Johnson	59,404	41.39
Total votes			143,511	100.0
	Democratic hold

1968

1968 United States House of Representatives elections^[36]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	92,680	54.69
	Republican	Fred E. Anderson	76,776	45.31
Total votes			169,456	100.0
	Democratic hold

1970

1970 United States House of Representatives elections^[37]

Party		Candidate	Votes	%
	Democratic	Wayne Aspinall (incumbent)	76,244	55.08
	Republican	Bill Gossard	62,169	44.92
Total votes			138,413	100.0
	Democratic hold

1972

1972 United States House of Representatives elections^[38]

Party		Candidate	Votes	%
	Republican	James Paul Johnson	94,994	51.03
	Democratic	Alan Merson	91,151	48.97
Total votes			186,145	100.0
	Republican gain from Democratic

1974

1974 United States House of Representatives elections^[39]

Party		Candidate	Votes	%
	Republican	James Paul Johnson (incumbent)	82,982	52.05
	Democratic	John Carroll	76,452	47.95
Total votes			159,434	100.0
	Republican hold

1976

1976 United States House of Representatives elections^[40]

Party		Candidate	Votes	%
	Republican	James Paul Johnson (incumbent)	119,458	54.05
	Democratic	Daniel Ogden	76,995	34.84
	Independent	Dick Davis	20,398	9.23
	Independent	Henry Thiel	4,167	1.89
Total votes			221,018	100.0
	Republican hold

1978

1978 United States House of Representatives elections^[41]

Party		Candidate	Votes	%
	Republican	James Paul Johnson (incumbent)	103,121	61.18
	Democratic	Morgan Smith	65,421	38.82
Total votes			168,542	100.0
	Republican hold

1980

1980 United States House of Representatives elections^[42]

Party		Candidate	Votes	%
	Republican	Hank Brown	178,221	68.42
	Democratic	Polly Baca	76,849	29.50
	Libertarian	Cynthia Molson-Smith	5,421	2.08
Total votes			260,491	100.0
	Republican hold

1982

1982 United States House of Representatives elections^[43]

Party		Candidate	Votes	%
	Republican	Hank Brown (incumbent)	105,550	69.76
	Democratic	Charles "Bud" Bishopp	45,750	30.24
Total votes			151,300	100.0
	Republican hold

1984

1984 United States House of Representatives elections^[44]

Party		Candidate	Votes	%
	Republican	Hank Brown (incumbent)	146,469	71.13
	Democratic	Mary Fagan Bates	56,462	27.42
	Libertarian	Randy Fitzgerald	2,999	1.45
Total votes			205,930	100.0
	Republican hold

1986

1986 United States House of Representatives elections^[45]

Party		Candidate	Votes	%
	Republican	Hank Brown (incumbent)	117,089	69.80
	Democratic	David Sprague	50,672	30.20
Total votes			167,761	100.0
	Republican hold

1988

1988 United States House of Representatives elections^[46]

Party		Candidate	Votes	%
	Republican	Hank Brown (incumbent)	156,202	73.08
	Democratic	Charles S. Vigil	57,552	26.92
Total votes			213,754	100.0
	Republican hold

1990

1990 United States House of Representatives elections^[47]

Party		Candidate	Votes	%
	Republican	Wayne Allard	89,285	54.05
	Democratic	Richard R. "Dick" Bond	75,901	45.95
Total votes			165,186	100.0
	Republican hold

1992

1992 United States House of Representatives elections^[48]

Party		Candidate	Votes	%
	Republican	Wayne Allard (incumbent)	139,884	57.84
	Democratic	Tom Redder	101,957	42.16
Total votes			241,841	100.0
	Republican hold

1994

1994 United States House of Representatives elections^[49]

Party		Candidate	Votes	%
	Republican	Wayne Allard (incumbent)	136,251	72.30
	Democratic	Cathy Kipp	52,202	27.70
Total votes			188,453	100.0
	Republican hold

1996

1996 United States House of Representatives elections^[50]

Party		Candidate	Votes	%
	Republican	Bob Schaffer	137,012	56.14
	Democratic	Guy Kelley	92,837	38.04
	American	Wesley Paul "Wes" McKinley	7,428	3.04
	Natural Law	Cynthia Parker	6,790	2.78
Total votes			244,067	100.0
	Republican hold

1998

1998 United States House of Representatives elections^[51]

Party		Candidate	Votes	%
	Republican	Bob Schaffer (incumbent)	131,318	59.34
	Democratic	Susan Kirkpatrick	89,973	40.66
Total votes			221,291	100.0
	Republican hold

2000

2000 United States House of Representatives elections^[52]

Party		Candidate	Votes	%
	Republican	Bob Schaffer (incumbent)	209,078	79.50
	Natural Law	Dan Sewell Ward	19,721	7.50
	Libertarian	Kordon L. Baker	19,713	7.50
	Constitution	Leslie J. Hanks	9,955	3.77
	Write-in		4,539	1.73
Total votes			263,006	100.0
	Republican hold

2002

2002 United States House of Representatives elections^[53]

Party		Candidate	Votes	%
	Republican	Marilyn Musgrave	115,359	54.95
	Democratic	Stan Matsunaka	87,499	41.68
	Libertarian	John Volz	7,097	3.37
Total votes			209,955	100.0
	Republican hold

2004

2004 United States House of Representatives elections^[54]

Party		Candidate	Votes	%
	Republican	Marilyn Musgrave (incumbent)	155,958	51.05
	Democratic	Stan Matsunaka	136,812	44.78
	Green	Bob Kinsey	12,739	4.17
Total votes			305,509	100.0
	Republican hold

2006

2006 United States House of Representatives elections^[55]

Party		Candidate	Votes	%
	Republican	Marilyn Musgrave (incumbent)	109,732	45.61
	Democratic	Angie Paccione	103,748	43.11
	Reform	Eric Eidsness	27,133	11.28
Total votes			240,613	100.0
	Republican hold

2008

2008 United States House of Representatives elections^[56]

Party		Candidate	Votes	%
	Democratic	Betsy Markey	187,348	56%
	Republican	Marilyn Musgrave (incumbent)	146,030	44%
Total votes			333,378	100%
	Democratic gain from Republican

2010

2010 United States House of Representatives elections^[57]

Party		Candidate	Votes	%
	Republican	Cory Gardner	138,634	52%
	Democratic	Betsy Markey (incumbent)	109,249	41%
	Constitution	Doug Aden	12,312	5%
	No party	Ken "Wasko" Waszkiewicz	3,986	2%
Total votes			264,181	100%
	Republican gain from Democratic

2012

2012 United States House of Representatives elections^[57]

Party		Candidate	Votes	%
	Republican	Cory Gardner (incumbent)	200,006	59%
	Democratic	Brandon Shaffer	128,800	37%
	Libertarian	Josh Gilliland	10,682	3%
	Constitution	Doug Aden	5,848	1%
Total votes			345,336	100%
	Republican hold

2014

2014 United States House of Representatives elections^[57]

Party		Candidate	Votes	%
	Republican	Ken Buck	185,292	65%
	Democratic	Vic Meyers	83,727	29%
	Libertarian	Jess Loban	9,472	3%
	Independent	Grant Doherty	8,016	3%
Total votes			286,507	100%
	Republican hold

2016

2016 United States House of Representatives elections^[57]

Party		Candidate	Votes	%
	Republican	Ken Buck (incumbent)	248,230	63.5%
	Democratic	Bob Seay	123,642	31.7%
	Libertarian	Bruce Griffith	18,761	4.8%
Total votes			390,633	100%
	Republican hold

2018

2018 United States House of Representatives elections^[58]

Party		Candidate	Votes	%
	Republican	Ken Buck (incumbent)	224,038	60.61%
	Democratic	Karen McCormick	145,544	39.38%
	Write-in		38	0.01%
Total votes			369,620	100%
	Republican hold

2020

2020 United States House of Representatives elections^[59]

Party		Candidate	Votes	%
	Republican	Ken Buck (incumbent)	285,606	60.1%
	Democratic	Ike McCorkle	173,945	36.6%
	Libertarian	Bruce Griffith	11,026	2.3%
	Unity	Laura Ireland	4,530	1.0%
Total votes			475,107	100%
	Republican hold

2022

2022 United States House of Representatives elections^[60]

Party		Candidate	Votes	%
	Republican	Ken Buck (incumbent)	216,024	60.9%
	Democratic	Ike McCorkle	129,619	36.6%
	American Constitution	Ryan McGonigal	8,870	2.5%
Total votes			354,513	100%
	Republican hold

2024 (special)

2024 Colorado's 4th congressional district special election^[61]

Party		Candidate	Votes	%
	Republican	Greg Lopez	100,068	58.40%
	Democratic	Trisha Calvarese	59,003	34.43%
	Libertarian	Hannah Goodman	9,065	5.29%
	Approval Voting	Frank Atwood	3,224	1.88%
Total votes			171,360	100.00%
	Republican hold

Historical district boundaries

2003–2013

2013–2023

2023–2033

See also

• United States portal
• Colorado portal

• Colorado's congressional districts
• List of United States congressional districts

References

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present

1. "Congressional Districts Relationship Files (state-based)". www.census.gov. US Census Bureau Geography.
2. "My Congressional District". www.census.gov. Center for New Media & Promotion (CNMP), US Census Bureau.
3. "My Congressional District".
4. "2022 Cook PVI: District Map and List". Cook Political Report. Retrieved January 10, 2023.
5. https://www.cpr.org/2024/06/03/vg-2024-colorado-primary-elections-congressional-district-4-candidate-trisha-calvarese/ ^{[bare URL]}
6. https://ballotpedia.org/Trisha_Calvarese ^{[bare URL]}
7. Presidential Election Results, by district, swingstateproject.com
8. "Our Campaigns - CO District 4 Race - Nov 03, 1914". www.ourcampaigns.com.
9. "Our Campaigns - CO District 4 Race - Nov 07, 1916". www.ourcampaigns.com.
10. "Our Campaigns - CO District 4 Race - Nov 05, 1918". www.ourcampaigns.com.
11. "1920 Election Results" (PDF). house.gov.
12. "1922 Election Results" (PDF). house.gov.
13. "1924 Election Results" (PDF). house.gov.
14. "1926 Election Results" (PDF). house.gov.
15. "1928 Election Results" (PDF). house.gov.
16. "1930 Election Results" (PDF). house.gov.
17. "1932 Election Results" (PDF). house.gov.
18. "1934 Election Results" (PDF). house.gov.
19. "1936 Election Results" (PDF). house.gov.
20. "1938 Election Results" (PDF). house.gov.
21. "1940 Election Results" (PDF). house.gov.
22. "Our Campaigns - CO District 4 - Special Election Race - Dec 09, 1941". www.ourcampaigns.com.
23. "1942 Election Results" (PDF). house.gov.
24. "1944 Election Results" (PDF). house.gov.
25. "1946 Election Results" (PDF). house.gov.
26. "1948 Election Results" (PDF). house.gov.
27. "1950 Election Results" (PDF). house.gov.
28. "1952 Election Results" (PDF). house.gov.
29. "1954 Election Results" (PDF). house.gov.
30. "1956 Election Results" (PDF). house.gov.
31. "1958 Election Results" (PDF). house.gov.
32. "1960 Election Results" (PDF). house.gov.
33. "1962 Election Results" (PDF). house.gov.
34. "1964 Election Results" (PDF). house.gov.
35. "1966 Election Results" (PDF). house.gov.
36. "1968 Election Results" (PDF). house.gov.
37. "1970 Election Results" (PDF). house.gov.
38. "1972 Election Results" (PDF). house.gov.
39. "1974 Election Results" (PDF). house.gov.
40. "1976 Election Results" (PDF). house.gov.
41. "1978 Election Results" (PDF). house.gov.
42. "1980 Election Results" (PDF). house.gov.
43. "1982 Election Results" (PDF). house.gov.
44. "1984 Election Results" (PDF). house.gov.
45. "1986 Election Results" (PDF). house.gov.
46. "1988 Election Results" (PDF). house.gov.
47. "1990 Election Results" (PDF). house.gov.
48. "1992 Election Results" (PDF). house.gov.
49. "1994 Election Results" (PDF). house.gov.
50. "1996 Election Results" (PDF). house.gov.
51. "1998 Election Results" (PDF). house.gov.
52. "2000 Election Results" (PDF). house.gov.
53. "2002 Election Results" (PDF). house.gov.
54. "2004 Election Results" (PDF). house.gov.
55. "2006 Election Results" (PDF). house.gov.
56. "2008 Election Results" (PDF). house.gov.
57. "2010 Election Results". state.co.us. Archived from the original on November 29, 2010. Retrieved July 24, 2011.
58. "2018 Colorado general election results". Retrieved June 21, 2019.
59. "2020 General Election - Official Compiled Results". Colorado Secretary of State. Retrieved December 6, 2020.
60. "Certificate & Results - General Election Statewide Abstract of Votes Cast" (PDF). Colorado Secretary of State.
61. "Representative to the 118th United States Congress - District 4 (Congressional Vacancy Election)". Colorado Secretary of State. 2024. Retrieved July 7, 2024.

External links

• Interactive map of Colorado's 4th Congressional District

39°04′15″N 103°24′50″W