| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,524 | 7,969 | 9,586 | |
| 2020 | R | 1,561 | 7,469 | 9,140 | |
| 2016 | R | 1,278 | 6,339 | 7,867 | |
| 2012 | R | 1,367 | 5,885 | 7,356 | |
| 2008 | R | 1,797 | 5,762 | 7,646 | |
| 2004 | R | 1,815 | 5,737 | 7,586 | |
| 2000 | R | 1,930 | 4,745 | 6,770 | |
| 1996 | R | 2,427 | 2,840 | 6,026 | |
| 1992 | R | 2,173 | 2,300 | 6,489 | |
| 1988 | R | 2,670 | 3,458 | 6,147 | |
| 1984 | R | 2,046 | 3,923 | 5,983 | |
| 1980 | R | 2,431 | 2,908 | 5,437 | |
| 1976 | D | 2,954 | 1,912 | 4,883 | |
| 1972 | R | 1,014 | 2,947 | 3,976 | |
| 1968 | D | 1,817 | 1,377 | 3,921 | |
| 1964 | D | 2,690 | 1,024 | 3,721 | |
| 1960 | D | 1,852 | 1,653 | 3,525 | |
| 1956 | D | 1,670 | 1,654 | 3,331 | |
| 1952 | R | 1,940 | 1,982 | 3,929 | |
| 1948 | D | 2,303 | 501 | 2,956 | |
| 1944 | D | 2,502 | 504 | 3,335 | |
| 1940 | D | 3,083 | 595 | 3,680 | |
| 1936 | D | 2,283 | 350 | 2,638 | |
| 1932 | D | 3,214 | 272 | 3,489 | |
| 1928 | R | 1,235 | 1,526 | 2,765 | |
| 1924 | D | 2,524 | 403 | 3,007 | |
| 1920 | D | 1,556 | 567 | 2,544 | |
| 1916 | D | 1,561 | 179 | 1,817 | |
| 1912 | D | 1,217 | 64 | 1,458 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Bosque County's 2024 presidential margin of R+67.3 places it among the most heavily Republican counties in Texas, reflecting a broader pattern of rural central-Texas counties consolidating sharply away from statewide competitiveness over the past two decades.
The unraveling was not abrupt. The Democratic margin in Bosque 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 nine points. By 2024, the margin had widened further.
The economic and demographic context is severe. Bosque County's median household income of $68,914 is among the lowest of any county in the United States; 9% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Somervell County and Hamilton County.