| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 33,844 | 56,671 | 91,961 | |
| 2020 | R | 35,349 | 47,530 | 85,313 | |
| 2016 | R | 23,121 | 38,738 | 67,211 | |
| 2012 | R | 17,477 | 37,209 | 55,962 | |
| 2008 | R | 20,502 | 37,465 | 58,673 | |
| 2004 | R | 16,128 | 37,594 | 54,309 | |
| 2000 | R | 12,359 | 32,864 | 46,941 | |
| 1996 | R | 13,968 | 22,082 | 38,644 | |
| 1992 | R | 14,819 | 23,943 | 49,340 | |
| 1988 | R | 14,885 | 29,369 | 44,690 | |
| 1984 | R | 12,348 | 34,733 | 47,221 | |
| 1980 | R | 9,856 | 17,798 | 29,539 | |
| 1976 | R | 10,628 | 15,685 | 26,700 | |
| 1972 | R | 5,692 | 14,243 | 20,051 | |
| 1968 | R | 6,299 | 6,839 | 15,579 | |
| 1964 | D | 7,998 | 4,003 | 12,019 | |
| 1960 | D | 5,907 | 4,553 | 10,477 | |
| 1956 | R | 3,463 | 4,942 | 8,436 | |
| 1952 | R | 4,213 | 4,681 | 8,896 | |
| 1948 | D | 3,459 | 1,533 | 5,530 | |
| 1944 | D | 3,358 | 464 | 4,375 | |
| 1940 | D | 4,151 | 617 | 4,777 | |
| 1936 | D | 2,610 | 45 | 2,659 | |
| 1932 | D | 2,588 | 195 | 2,801 | |
| 1928 | D | 1,480 | 738 | 2,221 | |
| 1924 | D | 2,128 | 255 | 2,444 | |
| 1920 | D | 1,281 | 277 | 2,172 | |
| 1916 | D | 1,027 | 273 | 1,308 | |
| 1912 | D | 762 | 142 | 961 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Texas A&M University, Brazos County blends a large student and academic population with a conservative-leaning permanent electorate that has consistently returned Republican presidential margins above 20 points.
The Democratic margin in Brazos County peaked at ninety-six points in 1936. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was twenty-five points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Brazos County's median household income of $58,553 sits well below state and national norms, and 24% 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 Fairbanks North Star Borough and Guadalupe County.