| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 264 | 1,315 | 1,606 | |
| 2020 | R | 295 | 1,350 | 1,677 | |
| 2016 | R | 233 | 1,197 | 1,503 | |
| 2012 | R | 367 | 1,166 | 1,570 | |
| 2008 | R | 504 | 1,225 | 1,781 | |
| 2004 | R | 517 | 1,226 | 1,789 | |
| 2000 | R | 505 | 1,235 | 1,854 | |
| 1996 | R | 547 | 1,239 | 1,989 | |
| 1992 | R | 689 | 756 | 2,115 | |
| 1988 | R | 1,020 | 1,045 | 2,153 | |
| 1984 | R | 718 | 1,758 | 2,530 | |
| 1980 | R | 557 | 1,840 | 2,572 | |
| 1976 | D | 1,359 | 1,170 | 2,581 | |
| 1972 | R | 806 | 1,639 | 2,512 | |
| 1968 | R | 864 | 1,471 | 2,560 | |
| 1964 | D | 1,778 | 1,098 | 2,901 | |
| 1960 | R | 1,418 | 1,668 | 3,097 | |
| 1956 | R | 1,080 | 2,007 | 3,094 | |
| 1952 | R | 843 | 2,650 | 3,510 | |
| 1948 | R | 1,360 | 1,840 | 3,262 | |
| 1944 | R | 1,076 | 2,193 | 3,283 | |
| 1940 | R | 1,588 | 2,394 | 4,001 | |
| 1936 | D | 2,482 | 1,733 | 4,219 | |
| 1932 | D | 2,275 | 1,433 | 3,774 | |
| 1928 | R | 1,296 | 1,985 | 3,307 | |
| 1924 | R | 787 | 1,780 | 3,109 | |
| 1920 | R | 605 | 2,017 | 2,747 | |
| 1916 | D | 1,478 | 1,223 | 2,936 | |
| 1912 | D | 870 | 210 | 1,831 | |
| 1908 | D | 894 | 764 | 1,697 | |
| 1904 | R | 570 | 883 | 1,517 | |
| 1900 | D | 717 | 681 | 1,405 | |
| 1896 | D | 643 | 515 | 1,168 | |
| 1892 | R | 0 | 616 | 1,200 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Rush County's Republican presidential margin exceeded 65 points in 2024, reflecting a sparsely populated High Plains community where ranching and wheat farming shape both the economy and the electorate.
The Democratic margin in Rush County peaked at thirty-six points in 1912. By 1980 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-five points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Rush County's median household income of $59,970 sits well below state and national norms, and 11% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Trego County and Edwards County.
