1819 United States House of Representatives election in Illinois

Illinois elected its member August 2, 1819, after the new congress began but before the first session convened. The incumbent had just been elected to the new seat in late 1818.

District	Incumbent			This race
	Member	Party	First elected	Results	Candidates[a]
Illinois at-large	John McLean	Democratic-Republican	1818[b]	Incumbent lost re-election. New member elected. Democratic-Republican hold.	√ Daniel P. Cook (Democratic-Republican) 59.4% John McLean (Democratic-Republican) 40.6%

See also

• 1818 and 1819 United States House of Representatives elections
• List of United States representatives from Illinois

Notes

1. Only candidates with at least 1% of the vote listed.
2. Late election to the 15th Congress