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.