| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 921 | 2,145 | 3,139 | |
| 2020 | R | 998 | 2,104 | 3,163 | |
| 2016 | R | 919 | 1,854 | 2,951 | |
| 2012 | R | 1,300 | 1,670 | 3,041 | |
| 2008 | R | 1,550 | 1,660 | 3,269 | |
| 2004 | R | 1,478 | 2,259 | 3,774 | |
| 2000 | D | 1,957 | 1,274 | 3,284 | |
| 1996 | R | 1,636 | 1,651 | 3,669 | |
| 1992 | D | 1,732 | 1,527 | 4,112 | |
| 1988 | D | 2,071 | 1,969 | 4,062 | |
| 1984 | R | 1,680 | 2,627 | 4,324 | |
| 1980 | R | 1,572 | 2,915 | 4,834 | |
| 1976 | D | 2,650 | 2,003 | 4,679 | |
| 1972 | R | 2,321 | 2,547 | 4,880 | |
| 1968 | D | 2,669 | 2,068 | 4,915 | |
| 1964 | D | 3,120 | 1,953 | 5,073 | |
| 1960 | R | 2,563 | 2,738 | 5,301 | |
| 1956 | D | 2,873 | 2,683 | 5,556 | |
| 1952 | R | 1,983 | 3,693 | 5,676 | |
| 1948 | D | 2,702 | 2,310 | 5,067 | |
| 1944 | R | 2,285 | 2,365 | 4,650 | |
| 1940 | D | 3,134 | 2,975 | 6,109 | |
| 1936 | D | 3,569 | 2,078 | 5,871 | |
| 1932 | D | 4,046 | 2,433 | 6,635 | |
| 1928 | R | 2,451 | 3,868 | 6,352 | |
| 1924 | R | 595 | 2,613 | 4,520 | |
| 1920 | R | 785 | 2,923 | 4,491 | |
| 1916 | D | 1,660 | 1,622 | 3,415 | |
| 1912 | D | 1,347 | 0 | 3,025 | |
| 1908 | R | 1,121 | 1,847 | 3,130 | |
| 1904 | R | 492 | 2,127 | 2,854 | |
| 1900 | R | 1,087 | 1,496 | 2,652 | |
| 1896 | R | 1,061 | 1,132 | 2,206 | |
| 1892 | R | 171 | 1,133 | 2,136 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Spink County sits in northeast South Dakota's Coteau des Prairies, where agriculture dominates both land use and political identity. Its small, dispersed population has delivered lopsided Republican margins consistently across recent election cycles.
The Republican margin in Spink County reached its widest at fifty-seven points in 1904. The margin in 2024 was thirty-nine points, in line with the county's deep historical pattern.
Spink County's loyalty is rooted in its place. Median household income of $70,139, a 93% non-Hispanic-white share, and a population of 6,219 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Aurora County and Kingsbury County.
