| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 760 | 1,989 | 2,801 | |
| 2020 | R | 819 | 1,904 | 2,779 | |
| 2016 | R | 703 | 1,680 | 2,551 | |
| 2012 | R | 1,092 | 1,451 | 2,608 | |
| 2008 | R | 1,277 | 1,435 | 2,784 | |
| 2004 | R | 1,163 | 1,804 | 3,014 | |
| 2000 | D | 1,612 | 1,049 | 2,727 | |
| 1996 | D | 1,357 | 1,297 | 3,001 | |
| 1992 | D | 1,267 | 1,113 | 3,143 | |
| 1988 | R | 1,472 | 1,592 | 3,087 | |
| 1984 | R | 1,249 | 2,121 | 3,383 | |
| 1980 | R | 1,132 | 2,376 | 3,807 | |
| 1976 | R | 1,762 | 1,844 | 3,617 | |
| 1972 | R | 1,632 | 2,320 | 3,958 | |
| 1968 | R | 1,491 | 2,300 | 3,937 | |
| 1964 | R | 2,005 | 2,126 | 4,131 | |
| 1960 | R | 1,677 | 2,887 | 4,564 | |
| 1956 | R | 1,585 | 2,933 | 4,518 | |
| 1952 | R | 1,029 | 3,703 | 4,732 | |
| 1948 | R | 1,338 | 2,332 | 3,728 | |
| 1944 | R | 1,156 | 2,541 | 3,697 | |
| 1940 | R | 1,503 | 3,551 | 5,054 | |
| 1936 | R | 2,037 | 2,813 | 5,076 | |
| 1932 | D | 2,808 | 2,135 | 5,033 | |
| 1928 | R | 1,352 | 3,499 | 4,868 | |
| 1924 | R | 333 | 2,242 | 3,415 | |
| 1920 | R | 481 | 2,344 | 3,271 | |
| 1916 | D | 1,339 | 1,096 | 2,585 | |
| 1912 | D | 747 | 0 | 2,164 | |
| 1908 | R | 799 | 1,537 | 2,532 | |
| 1904 | R | 344 | 1,896 | 2,441 | |
| 1900 | R | 868 | 1,330 | 2,289 | |
| 1896 | D | 1,051 | 950 | 2,029 | |
| 1892 | R | 175 | 951 | 2,055 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Kingsbury County's small, agriculture-dependent population has backed Republican presidential candidates by wide margins for decades, with 2024's R+43.9 result consistent with a long pattern of lopsided outcomes in sparsely settled eastern South Dakota.
The Republican margin in Kingsbury County reached its widest at sixty-four points in 1904. The margin in 2024 was forty-four points, in line with the county's deep historical pattern.
Kingsbury County's loyalty is rooted in its place. Median household income of $74,000, a 92% non-Hispanic-white share, and a population of 5,244 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 Bon Homme County and Spink County.
