Prussian Landtag elections in the Weimar Republic

The Free State of Prussia held elections to its Landtag between 1919 and 1933.^[1] From 1919 through 1928, these elections gave a plurality to the SPD. In 1932 and 1933, the NSDAP (Nazi Party) won pluralities, generally in line with the rest of Germany.^[2][3] The Landtag subsequently was formally abolished as a result of the "Law on the Reconstruction of the Reich" of 30 January 1934 which replaced the German federal system with a unitary state.^[4]

Year	1919		1921		1924		1928		1932		1933
Party	%	Seats	%	Seats	%	Seats	%	Seats	%	Seats	%	Seats
SPD	36.4	145	25.9	109	24.9	114	29.0	137	21.2	94	16.6	80
Zentrum	22.3	94	17.9	76	17.6	81	15.2	71	15.3	67	14.1	68
DDP/DStP	16.2	65	5.9	26	5.9	27	4.4	21	1.5	2	0.7	3
DNVP	11.2	48	18.0	76	23.7	109	17.4	82	6.9	31	8.9	43
USPD	7.4	24	6.4	27
DVP	5.7	23	14.0	59	9.8	45	8.5	40	1.5	7	1.0	3
DHP	0.5	2	2.4	11	1.4	6	1.0	4	0.3	1	0.2	2
SHBLD	0.4	1
KPD			7.5	31	9.6	44	11.9	56	12.3	57	13.2	63
WP			1.2	4	2.4	11	4.5	21
Polen			0.4	2	0.4	2
NSFP					2.5	11
NSDAP							1.8	6	36.3	162	43.2	211
CNBL							1.5	8
VRP							1.2	2
DVFP							1.1	2
CSVD									1.2	2	0.9	3
Total seats	402		421		450		450		423		476

Prussia in the Weimar Republic shown in light blue.

Chart of election results.

References

1. "Landtagswahlen Freistaat Preußen 1919–1933".
2. Orlow, Dietrich (2009). Weimar Prussia, 1918-1925: The Unlikely Rock of Democracy. Pittsburgh, PA: University of Pittsburgh Press. p. 19. ISBN 9780822984962.
3. Craig, Gordon A. (1984). The End of Prussia. Madison, WI: University of Wisconsin Press. ISBN 9780299097349.
4. Wells, Roger H. (April 1936). "The Liquidation of the German Länder". The American Political Science Review. 30 (2). American Political Science Association: 351–352. doi:10.2307/1947263. JSTOR 1947263. S2CID 147621323.