| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,132 | 14,593 | 16,853 | |
| 2020 | R | 2,107 | 13,698 | 15,969 | |
| 2016 | R | 1,621 | 12,017 | 14,026 | |
| 2012 | R | 1,904 | 11,895 | 13,947 | |
| 2008 | R | 2,822 | 12,052 | 15,015 | |
| 2004 | R | 2,523 | 11,640 | 14,253 | |
| 2000 | R | 3,138 | 9,609 | 12,920 | |
| 1996 | R | 4,138 | 6,524 | 11,787 | |
| 1992 | R | 4,264 | 5,313 | 12,630 | |
| 1988 | R | 4,763 | 6,810 | 11,606 | |
| 1984 | R | 4,070 | 8,468 | 12,585 | |
| 1980 | R | 4,867 | 6,515 | 11,549 | |
| 1976 | D | 5,577 | 4,483 | 10,095 | |
| 1972 | R | 2,171 | 5,990 | 8,233 | |
| 1968 | D | 3,999 | 2,997 | 8,602 | |
| 1964 | D | 5,214 | 2,070 | 7,293 | |
| 1960 | D | 3,720 | 3,512 | 7,278 | |
| 1956 | R | 3,195 | 3,664 | 6,880 | |
| 1952 | R | 3,778 | 4,635 | 8,424 | |
| 1948 | D | 5,059 | 1,071 | 6,481 | |
| 1944 | D | 2,426 | 430 | 3,544 | |
| 1940 | D | 4,523 | 663 | 5,195 | |
| 1936 | D | 3,971 | 448 | 4,458 | |
| 1932 | D | 4,024 | 330 | 4,375 | |
| 1928 | R | 1,992 | 2,033 | 4,029 | |
| 1924 | D | 3,467 | 396 | 3,963 | |
| 1920 | D | 1,708 | 397 | 2,436 | |
| 1916 | D | 1,986 | 181 | 2,277 | |
| 1912 | D | 1,433 | 115 | 1,870 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Brown County, anchored by Brownwood in west-central Texas, recorded an R+73.9 presidential margin in 2024, placing it among the state's most heavily one-sided counties in a region where ranching and oil-field economies have long shaped voting patterns.
The unraveling was not abrupt. The Democratic margin in Brown County peaked at eighty-four points in 1932; it narrowed steadily over the late twentieth century. The 1980 election delivered the county to the Republican party for the first time in many years, by a margin of fourteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Brown County's median household income of $57,470 is among the lowest of any county in the United States; 15% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Callahan County and Young County.