| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 3,529 | 1,154 | 4,804 | |
| 2020 | D | 3,923 | 1,136 | 5,146 | |
| 2016 | D | 2,975 | 1,033 | 4,329 | |
| 2012 | D | 2,992 | 1,154 | 4,256 | |
| 2008 | D | 3,349 | 933 | 4,350 | |
| 2004 | D | 2,876 | 1,079 | 4,019 | |
| 2000 | D | 1,598 | 1,043 | 3,255 | |
| 1996 | D | 1,535 | 773 | 2,743 | |
| 1992 | D | 1,380 | 628 | 2,663 | |
| 1988 | D | 961 | 798 | 1,839 | |
| 1984 | R | 654 | 833 | 1,521 | |
| 1980 | R | 651 | 774 | 1,809 | |
| 1976 | D | 674 | 622 | 1,419 | |
| 1972 | R | 426 | 583 | 1,061 | |
| 1968 | R | 311 | 422 | 793 | |
| 1964 | D | 636 | 332 | 970 | |
| 1960 | D | 612 | 525 | 1,139 | |
| 1956 | R | 469 | 648 | 1,120 | |
| 1952 | R | 524 | 654 | 1,185 | |
| 1948 | D | 613 | 451 | 1,079 | |
| 1944 | D | 630 | 536 | 1,173 | |
| 1940 | D | 851 | 729 | 1,587 | |
| 1936 | D | 860 | 433 | 1,348 | |
| 1932 | D | 862 | 383 | 1,288 | |
| 1928 | R | 554 | 721 | 1,313 | |
| 1924 | R | 567 | 677 | 1,552 | |
| 1920 | R | 688 | 928 | 1,709 | |
| 1916 | D | 1,325 | 578 | 1,984 | |
| 1912 | D | 1,029 | 639 | 2,105 | |
| 1908 | D | 927 | 882 | 1,947 | |
| 1904 | R | 797 | 1,370 | 2,240 | |
| 1900 | D | 1,604 | 717 | 2,359 | |
| 1896 | D | 2,136 | 87 | 2,232 | |
| 1892 | R | 0 | 272 | 1,161 | |
| 1888 | R | 378 | 540 | 939 | |
| 1884 | R | 365 | 433 | 799 | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Telluride, this small mountain county posted a D+49.4 margin in 2024, making it one of the most Democratic-leaning counties in the state despite a population of fewer than 7,000 residents.
The Democratic margin in San Miguel County peaked at ninety-two points in 1896. By 1988 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty-nine points, the most Democratic-leaning result in the county's modern history.
The economic context is the key. San Miguel County's median household income of $79,024 sits well below state and national norms, and 9% 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 Pitkin County and Windham County.
