| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 758 | 3,807 | 4,663 | |
| 2020 | R | 785 | 4,107 | 4,981 | |
| 2016 | R | 726 | 3,850 | 4,791 | |
| 2012 | R | 987 | 3,490 | 4,577 | |
| 2008 | R | 1,117 | 3,286 | 4,483 | |
| 2004 | R | 1,064 | 3,456 | 4,559 | |
| 2000 | R | 1,082 | 3,156 | 4,358 | |
| 1996 | R | 1,439 | 2,589 | 4,409 | |
| 1992 | R | 1,269 | 2,019 | 4,505 | |
| 1988 | R | 1,835 | 2,513 | 4,414 | |
| 1984 | R | 1,121 | 3,394 | 4,567 | |
| 1980 | R | 1,043 | 3,220 | 4,674 | |
| 1976 | R | 2,025 | 2,350 | 4,502 | |
| 1972 | R | 1,066 | 2,873 | 4,045 | |
| 1968 | R | 1,175 | 2,529 | 4,035 | |
| 1964 | D | 2,145 | 2,007 | 4,171 | |
| 1960 | R | 1,489 | 2,806 | 4,305 | |
| 1956 | R | 1,544 | 2,782 | 4,329 | |
| 1952 | R | 1,292 | 3,404 | 4,733 | |
| 1948 | R | 1,907 | 2,277 | 4,213 | |
| 1944 | R | 1,374 | 2,847 | 4,221 | |
| 1940 | R | 1,917 | 3,531 | 5,508 | |
| 1936 | D | 2,878 | 2,462 | 5,440 | |
| 1932 | D | 3,220 | 2,129 | 5,701 | |
| 1928 | R | 1,383 | 3,401 | 4,924 | |
| 1924 | R | 865 | 2,789 | 4,816 | |
| 1920 | R | 1,254 | 2,673 | 4,215 | |
| 1916 | D | 2,466 | 1,436 | 4,161 | |
| 1912 | D | 1,170 | 466 | 3,232 | |
| 1908 | D | 1,148 | 1,061 | 2,375 | |
| 1904 | R | 525 | 1,110 | 1,748 | |
| 1900 | D | 392 | 316 | 748 | |
| 1896 | D | 442 | 180 | 633 | |
| 1892 | R | 0 | 198 | 561 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Yuma County sits in Colorado's northeastern plains, where wheat and corn agriculture dominate both the landscape and the electorate. In 2024 it delivered a 65-point Republican presidential margin, among the widest in the state.
The Democratic margin in Yuma County peaked at forty-one points in 1896. By 1968 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. Yuma County's median household income of $60,545 sits well below state and national norms, and 18% 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 DeWitt County and Kiowa County.