| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 206 | 649 | 874 | |
| 2020 | R | 231 | 656 | 901 | |
| 2016 | R | 193 | 620 | 910 | |
| 2012 | R | 287 | 586 | 902 | |
| 2008 | R | 359 | 676 | 1,044 | |
| 2004 | R | 281 | 706 | 993 | |
| 2000 | R | 349 | 612 | 982 | |
| 1996 | D | 509 | 489 | 1,093 | |
| 1992 | R | 451 | 526 | 1,185 | |
| 1988 | R | 480 | 643 | 1,136 | |
| 1984 | R | 386 | 756 | 1,159 | |
| 1980 | R | 484 | 655 | 1,166 | |
| 1976 | D | 597 | 556 | 1,160 | |
| 1972 | R | 270 | 752 | 1,047 | |
| 1968 | R | 345 | 658 | 1,141 | |
| 1964 | D | 674 | 559 | 1,240 | |
| 1960 | R | 619 | 734 | 1,355 | |
| 1956 | R | 528 | 779 | 1,313 | |
| 1952 | R | 591 | 782 | 1,376 | |
| 1948 | D | 670 | 458 | 1,131 | |
| 1944 | D | 660 | 554 | 1,216 | |
| 1940 | D | 970 | 479 | 1,449 | |
| 1936 | D | 1,010 | 444 | 1,460 | |
| 1932 | D | 1,023 | 264 | 1,305 | |
| 1928 | D | 514 | 474 | 991 | |
| 1924 | D | 574 | 270 | 930 | |
| 1920 | D | 693 | 412 | 1,121 | |
| 1916 | — | — | — | — | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
De Baca's sparse high-plains ranching economy and a population under 2,300 produce some of the most lopsided presidential margins in New Mexico, with the 2024 Republican margin exceeding 50 points.
The Democratic margin in De Baca County peaked at fifty-eight points in 1932. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was fifty-one points, the most Republican-leaning result in the county's modern history.
The economic context is the key. De Baca County's median household income of $0 sits well below state and national norms, and 16% 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 Charlton County and Quay County.