| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 317 | 417 | 753 | |
| 2020 | R | 317 | 427 | 756 | |
| 2016 | R | 237 | 344 | 652 | |
| 2012 | R | 291 | 344 | 650 | |
| 2008 | R | 270 | 334 | 623 | |
| 2004 | R | 227 | 383 | 619 | |
| 2000 | R | 168 | 294 | 486 | |
| 1996 | D | 192 | 179 | 447 | |
| 1992 | D | 171 | 159 | 449 | |
| 1988 | R | 174 | 217 | 394 | |
| 1984 | R | 117 | 333 | 459 | |
| 1980 | R | 125 | 271 | 450 | |
| 1976 | R | 167 | 235 | 423 | |
| 1972 | R | 96 | 247 | 348 | |
| 1968 | D | 126 | 116 | 265 | |
| 1964 | D | 204 | 89 | 295 | |
| 1960 | D | 158 | 146 | 305 | |
| 1956 | R | 99 | 168 | 268 | |
| 1952 | R | 98 | 209 | 308 | |
| 1948 | D | 190 | 144 | 335 | |
| 1944 | R | 150 | 170 | 322 | |
| 1940 | D | 273 | 229 | 508 | |
| 1936 | D | 285 | 126 | 417 | |
| 1932 | D | 210 | 112 | 379 | |
| 1928 | D | 187 | 144 | 350 | |
| 1924 | R | 101 | 150 | 326 | |
| 1920 | R | 146 | 183 | 371 | |
| 1916 | D | 278 | 135 | 463 | |
| 1912 | D | 286 | 186 | 643 | |
| 1908 | D | 488 | 218 | 727 | |
| 1904 | D | 575 | 306 | 911 | |
| 1900 | D | 700 | 208 | 915 | |
| 1896 | D | 808 | 11 | 822 | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
With fewer than 850 residents spread across the San Juan Mountains, Mineral County's small electorate makes each individual voter's choice unusually visible in the final margin—R+13.3 in 2024.
The Republican margin in Mineral County reached its widest at forty-seven points in 1984. The margin in 2024 was thirteen points, in line with the county's deep historical pattern.
Mineral County's loyalty is rooted in its place. Median household income of $56,250, a 91% non-Hispanic-white share, and a population of 729 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Jeff Davis County and Sierra County.
