| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 1,308 | 1,077 | 2,402 | |
| 2020 | D | 1,470 | 998 | 2,484 | |
| 2016 | D | 1,937 | 613 | 2,596 | |
| 2012 | D | 1,886 | 507 | 2,403 | |
| 2008 | D | 1,747 | 556 | 2,309 | |
| 2004 | D | 1,823 | 845 | 2,674 | |
| 2000 | D | 1,854 | 556 | 2,431 | |
| 1996 | D | 2,945 | 413 | 3,488 | |
| 1992 | D | 2,856 | 585 | 3,765 | |
| 1988 | D | 2,859 | 608 | 3,489 | |
| 1984 | D | 2,702 | 896 | 3,614 | |
| 1980 | D | 2,488 | 780 | 3,333 | |
| 1976 | D | 2,782 | 641 | 3,429 | |
| 1972 | D | 1,657 | 1,117 | 2,781 | |
| 1968 | D | 1,904 | 534 | 2,604 | |
| 1964 | D | 2,299 | 402 | 2,703 | |
| 1960 | D | 1,934 | 567 | 2,511 | |
| 1956 | D | 1,108 | 802 | 1,920 | |
| 1952 | D | 1,577 | 809 | 2,387 | |
| 1948 | D | 1,029 | 217 | 1,282 | |
| 1944 | D | 403 | 142 | 635 | |
| 1940 | D | 670 | 201 | 875 | |
| 1936 | D | 365 | 117 | 483 | |
| 1932 | D | 608 | 86 | 697 | |
| 1928 | D | 332 | 160 | 492 | |
| 1924 | D | 205 | 59 | 268 | |
| 1920 | D | 127 | 37 | 164 | |
| 1916 | D | 101 | 63 | 167 | |
| 1912 | D | 402 | 13 | 583 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Brooks County, anchored by Falfurrias, is over 95% Hispanic and sits squarely in the brush country of the Rio Grande Plain — a demographic profile that has long produced Democratic margins, though the party's advantage here narrowed noticeably between 2016 and 2024.
The Democratic margin in Brooks County reached its widest at seventy-five points in 1932. The margin in 2024 was ten points — still decisive.
Brooks County's loyalty is rooted in its place. Median household income of $47,764, a 24% non-Hispanic-white share, and a population of 6,943 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 Jim Hogg County and Dimmit County.
