| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,276 | 4,328 | 7,793 | |
| 2020 | R | 3,497 | 4,284 | 7,961 | |
| 2016 | R | 2,650 | 3,710 | 6,793 | |
| 2012 | D | 3,445 | 3,263 | 6,862 | |
| 2008 | D | 3,562 | 3,086 | 6,761 | |
| 2004 | D | 3,300 | 3,196 | 6,592 | |
| 2000 | D | 3,243 | 2,569 | 6,094 | |
| 1996 | D | 3,611 | 1,905 | 6,042 | |
| 1992 | D | 3,847 | 1,739 | 6,569 | |
| 1988 | D | 4,075 | 2,162 | 6,331 | |
| 1984 | D | 3,670 | 2,992 | 6,742 | |
| 1980 | D | 4,117 | 2,917 | 7,409 | |
| 1976 | D | 4,459 | 2,615 | 7,175 | |
| 1972 | R | 3,222 | 3,659 | 6,957 | |
| 1968 | D | 4,602 | 2,499 | 7,504 | |
| 1964 | D | 6,591 | 1,833 | 8,453 | |
| 1960 | D | 6,704 | 2,989 | 9,722 | |
| 1956 | R | 5,099 | 5,290 | 10,414 | |
| 1952 | D | 6,446 | 4,467 | 10,964 | |
| 1948 | D | 7,586 | 3,452 | 11,210 | |
| 1944 | D | 6,800 | 4,179 | 11,034 | |
| 1940 | D | 8,766 | 4,859 | 13,675 | |
| 1936 | D | 10,220 | 3,333 | 13,612 | |
| 1932 | D | 8,964 | 3,651 | 12,877 | |
| 1928 | D | 6,459 | 5,367 | 11,995 | |
| 1924 | R | 2,758 | 5,698 | 11,706 | |
| 1920 | R | 4,167 | 4,707 | 9,196 | |
| 1916 | D | 5,300 | 3,511 | 9,047 | |
| 1912 | R | 3,604 | 4,318 | 9,854 | |
| 1908 | R | 4,212 | 5,716 | 10,137 | |
| 1904 | R | 4,486 | 5,218 | 9,850 | |
| 1900 | D | 4,204 | 3,382 | 7,658 | |
| 1896 | D | 5,497 | 1,126 | 6,663 | |
| 1892 | R | 0 | 1,276 | 3,089 | |
| 1888 | D | 2,785 | 2,655 | 5,667 | |
| 1884 | D | 1,451 | 1,039 | 2,490 | |
| 1880 | D | 1,314 | 586 | 1,944 | |
| 1876 | — | — | — | — |
Las Animas stretches across the Purgatoire River valley in southeastern Colorado, where a majority-Hispanic population has shifted steadily rightward over the past decade, narrowing what was once a reliably Democratic margin into Republican territory.
The Democratic margin in Las Animas County has rarely exceeded sixty-six points in modern history; the Republican margin has rarely exceeded forty-one points. 2024 delivered the county to the Republican candidate by thirteen points.
Las Animas County's demographics resemble the country more than they resemble most counties. A 69% non-Hispanic-white share, a 19% poverty rate, and a median household income of $52,074 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of McCormick County and Jefferson County.