| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,188 | 2,583 | 3,867 | |
| 2020 | R | 1,111 | 2,471 | 3,630 | |
| 2016 | R | 797 | 2,061 | 3,066 | |
| 2012 | R | 868 | 1,788 | 2,715 | |
| 2008 | R | 912 | 1,672 | 2,629 | |
| 2004 | R | 739 | 1,657 | 2,428 | |
| 2000 | R | 507 | 1,451 | 2,111 | |
| 1996 | R | 412 | 920 | 1,562 | |
| 1992 | R | 343 | 651 | 1,375 | |
| 1988 | R | 310 | 753 | 1,084 | |
| 1984 | R | 241 | 832 | 1,093 | |
| 1980 | R | 231 | 674 | 1,010 | |
| 1976 | R | 259 | 491 | 787 | |
| 1972 | R | 154 | 495 | 693 | |
| 1968 | R | 204 | 433 | 716 | |
| 1964 | D | 406 | 358 | 767 | |
| 1960 | R | 314 | 509 | 823 | |
| 1956 | R | 264 | 534 | 799 | |
| 1952 | R | 231 | 662 | 899 | |
| 1948 | R | 384 | 547 | 943 | |
| 1944 | R | 333 | 601 | 943 | |
| 1940 | R | 495 | 685 | 1,194 | |
| 1936 | D | 674 | 526 | 1,220 | |
| 1932 | D | 729 | 413 | 1,199 | |
| 1928 | R | 389 | 600 | 1,019 | |
| 1924 | R | 281 | 429 | 966 | |
| 1920 | R | 289 | 560 | 885 | |
| 1916 | D | 529 | 403 | 974 | |
| 1912 | D | 510 | 347 | 992 | |
| 1908 | D | 555 | 499 | 1,063 | |
| 1904 | D | 612 | 587 | 1,207 | |
| 1900 | D | 870 | 510 | 1,381 | |
| 1896 | D | 986 | 167 | 1,159 | |
| 1892 | R | 0 | 296 | 684 | |
| 1888 | R | 374 | 574 | 955 | |
| 1884 | R | 567 | 812 | 1,384 | |
| 1880 | R | 1,061 | 1,297 | 2,394 | |
| 1876 | — | — | — | — |
Custer County sits in the Wet Mountain Valley with barely 3,500 residents, yet it reliably posts some of the widest Republican presidential margins in Colorado — 36 points in 2024 — making it a benchmark for the state's rural-conservative baseline.
The Democratic margin in Custer County peaked at seventy-one points in 1896. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was thirty-six points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Custer County's median household income of $72,674 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 Teller County and Kosciusko County.
