South Dakota

Party registration totals from 2008 through 2026. Source: South Dakota state election board filings.

Last Reported Date: 5/26/26

Republican (2026)

321,611

51.9% of total

Democratic (2026)

136,782

22.1% of total

Independent (2026)

157,104

25.4% of total

Other Parties (2026)

3,934

0.6% of total

South Dakota — Party Registration Share

% of active registrants by party

South Dakota — Raw Registration Totals

Active registrants by party

South Dakota — Annual Registration Totals

Active registrants by party

Year	Republican	GOP %	Democratic	Dem %	Independent	Ind %	Other	Other %	Total	Filing Date
2026	321,611	51.9%	136,782	22.1%	157,104	25.4%	3,934	0.6%	619,431	5.26.26
2025	318,541	51.2%	140,669	22.6%	158,911	25.5%	3,919	0.6%	622,040	1.2.26
2024	319,238	50.8%	146,160	23.3%	159,111	25.3%	4,067	0.6%	628,576	1.2.25
2023	301,657	50.1%	147,732	24.5%	149,322	24.8%	3,914	0.6%	602,625	11.1.23
2022	296,463	49.7%	151,415	25.4%	145,004	24.3%	4,187	0.7%	597,069	11.8.22
2021	279,187	48.4%	153,830	26.7%	139,740	24.2%	3,950	0.7%	576,707	11.1.21
2020	277,788	48.0%	158,829	27.4%	138,337	23.9%	3,712	0.6%	578,666	11.3.20
2019	258,451	47.2%	155,814	28.4%	130,248	23.8%	3,254	0.6%	547,767	11.1.19
2018	256,502	47.0%	158,972	29.2%	126,666	23.2%	3,168	0.6%	545,308	11.6.18
2017	247,267	46.3%	162,036	30.4%	121,572	22.8%	2,933	0.5%	533,808	11.1.17
2016	252,116	46.3%	170,694	31.4%	118,669	21.8%	2,949	0.5%	544,428	11.8.16
2015	239,351	46.1%	170,444	32.8%	109,708	21.1%	0	0.0%	519,503	11.2.15
2014	240,545	46.2%	176,169	33.8%	102,392	19.7%	1,935	0.4%	521,041	11.3.14
2013	243,725	45.7%	187,337	35.1%	100,635	18.9%	1,678	0.3%	533,375	11.4.13
2012	243,113	46.0%	189,493	35.8%	94,540	17.9%	1,475	0.3%	528,621	11.5.12
2011	235,180	45.8%	189,323	36.9%	87,889	17.1%	1,348	0.3%	513,740	11.1.11
2010	235,906	45.8%	193,304	37.5%	84,412	16.4%	1,383	0.3%	515,005	10.1.10
2009	231,144	45.4%	195,289	38.4%	81,257	16.0%	1,352	0.3%	509,042	11.4.09
2008	241,528	45.5%	204,413	38.5%	83,147	15.7%	1,374	0.3%	530,462	11.4.08