| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 816 | 3,490 | 4,456 | |
| 2020 | R | 929 | 3,545 | 4,596 | |
| 2016 | R | 739 | 3,210 | 4,340 | |
| 2012 | R | 853 | 2,926 | 3,911 | |
| 2008 | R | 1,006 | 2,785 | 3,909 | |
| 2004 | R | 780 | 3,204 | 4,061 | |
| 2000 | R | 589 | 3,078 | 3,846 | |
| 1996 | R | 1,180 | 2,110 | 3,837 | |
| 1992 | R | 1,135 | 1,496 | 3,986 | |
| 1988 | R | 1,437 | 2,264 | 3,844 | |
| 1984 | R | 1,344 | 2,695 | 4,041 | |
| 1980 | R | 1,274 | 2,519 | 4,187 | |
| 1976 | R | 1,393 | 1,640 | 3,206 | |
| 1972 | R | 932 | 1,781 | 2,951 | |
| 1968 | R | 934 | 1,632 | 2,814 | |
| 1964 | D | 1,877 | 1,149 | 3,032 | |
| 1960 | R | 1,438 | 1,697 | 3,135 | |
| 1956 | R | 1,261 | 1,822 | 3,083 | |
| 1952 | R | 1,190 | 1,941 | 3,148 | |
| 1948 | D | 1,156 | 1,090 | 2,293 | |
| 1944 | D | 1,072 | 1,006 | 2,203 | |
| 1940 | D | 1,582 | 1,103 | 2,695 | |
| 1936 | D | 1,436 | 697 | 2,489 | |
| 1932 | D | 1,496 | 733 | 2,325 | |
| 1928 | R | 469 | 1,411 | 1,906 | |
| 1924 | R | 459 | 1,126 | 1,979 | |
| 1920 | R | 497 | 1,310 | 1,910 | |
| 1916 | D | 1,210 | 941 | 2,320 | |
| 1912 | R | 413 | 418 | 1,360 | |
| 1908 | R | 433 | 748 | 1,314 | |
| 1904 | R | 316 | 1,007 | 1,485 | |
| 1900 | R | 613 | 911 | 1,570 | |
| 1896 | D | 867 | 736 | 1,652 | |
| 1892 | R | 437 | 568 | 1,294 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Grant County's vast high-desert ranching landscape and sparse population of under 8,000 produce some of the most lopsided Republican presidential margins in Oregon, a pattern that has held consistently across recent election cycles.
The Democratic margin in Grant County peaked at thirty-three points in 1932. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Grant County's median household income of $59,450 sits well below state and national norms, and 13% 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 Grant County and Idaho County.