| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,176 | 4,698 | 8,056 | |
| 2020 | R | 3,563 | 4,408 | 8,103 | |
| 2016 | R | 3,195 | 3,478 | 7,295 | |
| 2012 | R | 3,583 | 3,670 | 7,500 | |
| 2008 | D | 4,311 | 3,870 | 8,340 | |
| 2004 | R | 3,340 | 4,164 | 7,593 | |
| 2000 | R | 2,975 | 3,395 | 6,612 | |
| 1996 | D | 3,001 | 2,616 | 6,326 | |
| 1992 | D | 2,637 | 2,166 | 6,272 | |
| 1988 | R | 3,066 | 3,415 | 6,636 | |
| 1984 | R | 2,557 | 4,145 | 6,776 | |
| 1980 | R | 2,443 | 3,636 | 6,346 | |
| 1976 | R | 2,872 | 2,966 | 5,903 | |
| 1972 | R | 1,560 | 2,958 | 4,677 | |
| 1968 | R | 1,438 | 1,952 | 3,896 | |
| 1964 | D | 2,286 | 1,665 | 3,969 | |
| 1960 | D | 1,708 | 1,583 | 3,306 | |
| 1956 | R | 1,506 | 1,526 | 3,067 | |
| 1952 | R | 1,332 | 1,729 | 3,095 | |
| 1948 | D | 1,629 | 941 | 2,584 | |
| 1944 | D | 1,383 | 1,074 | 2,459 | |
| 1940 | D | 1,388 | 1,066 | 2,460 | |
| 1936 | D | 1,500 | 806 | 2,367 | |
| 1932 | D | 1,605 | 641 | 2,286 | |
| 1928 | R | 647 | 860 | 1,514 | |
| 1924 | R | 596 | 709 | 1,638 | |
| 1920 | D | 1,000 | 834 | 1,868 | |
| 1916 | D | 796 | 418 | 1,263 | |
| 1912 | D | 461 | 81 | 819 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Luna County sits along the U.S.–Mexico border in southwestern New Mexico, where a sparse, agriculture-rooted population has delivered Republican presidential margins in the high teens for several cycles running.
The Democratic margin in Luna County has rarely exceeded forty-six points in modern history; the Republican margin has rarely exceeded thirty points. 2024 delivered the county to the Republican candidate by nineteen points.
Luna County's demographics resemble the country more than they resemble most counties. A 40% non-Hispanic-white share, a 29% poverty rate, and a median household income of $36,419 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Valencia County and Hidalgo County.