| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,607 | 13,648 | 16,395 | |
| 2020 | R | 2,655 | 12,171 | 15,007 | |
| 2016 | R | 2,132 | 9,548 | 12,044 | |
| 2012 | R | 2,486 | 8,161 | 10,804 | |
| 2008 | R | 3,464 | 8,092 | 11,694 | |
| 2004 | R | 4,001 | 7,893 | 11,960 | |
| 2000 | R | 4,102 | 6,074 | 10,340 | |
| 1996 | D | 4,276 | 3,495 | 8,796 | |
| 1992 | D | 4,164 | 2,510 | 9,615 | |
| 1988 | D | 5,163 | 4,024 | 9,214 | |
| 1984 | R | 4,399 | 4,692 | 9,106 | |
| 1980 | D | 5,284 | 3,196 | 8,611 | |
| 1976 | D | 5,845 | 2,102 | 7,985 | |
| 1972 | R | 2,295 | 3,826 | 6,181 | |
| 1968 | D | 3,931 | 1,585 | 7,177 | |
| 1964 | D | 5,976 | 1,219 | 7,200 | |
| 1960 | D | 4,282 | 1,844 | 6,138 | |
| 1956 | D | 4,504 | 1,910 | 6,420 | |
| 1952 | D | 5,363 | 2,099 | 7,465 | |
| 1948 | D | 6,132 | 553 | 7,065 | |
| 1944 | D | 5,984 | 677 | 7,163 | |
| 1940 | D | 7,478 | 792 | 8,276 | |
| 1936 | D | 5,242 | 368 | 5,617 | |
| 1932 | D | 5,338 | 460 | 5,815 | |
| 1928 | D | 2,525 | 2,122 | 4,651 | |
| 1924 | D | 5,596 | 653 | 6,462 | |
| 1920 | D | 3,461 | 1,103 | 5,182 | |
| 1916 | D | 3,493 | 471 | 4,209 | |
| 1912 | D | 2,661 | 227 | 3,411 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Fannin County's R+67.3 margin in 2024 places it among the most lopsided rural counties along Texas's northern border, where small-town agricultural communities have shifted decisively away from competitive voting patterns over the past two decades.
The unraveling was not abrupt. The Democratic margin in Fannin County peaked at eighty-seven points in 1936; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of nineteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Fannin County's median household income of $72,295 is among the lowest of any county in the United States; 14% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Tyler County and Jasper County.