| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,249 | 8,286 | 9,593 | |
| 2020 | R | 1,403 | 8,194 | 9,673 | |
| 2016 | R | 1,248 | 6,624 | 8,016 | |
| 2012 | R | 1,668 | 5,910 | 7,654 | |
| 2008 | R | 2,166 | 5,644 | 7,910 | |
| 2004 | R | 2,659 | 5,043 | 7,745 | |
| 2000 | R | 2,775 | 4,236 | 7,116 | |
| 1996 | D | 3,340 | 2,804 | 6,821 | |
| 1992 | D | 3,465 | 2,357 | 7,360 | |
| 1988 | D | 4,198 | 3,070 | 7,292 | |
| 1984 | R | 3,119 | 3,638 | 6,785 | |
| 1980 | D | 3,540 | 2,545 | 6,195 | |
| 1976 | D | 3,322 | 1,965 | 5,318 | |
| 1972 | R | 1,321 | 2,955 | 4,290 | |
| 1968 | D | 1,204 | 1,120 | 3,786 | |
| 1964 | D | 1,818 | 1,216 | 3,037 | |
| 1960 | R | 1,242 | 1,401 | 2,656 | |
| 1956 | R | 797 | 1,734 | 2,541 | |
| 1952 | R | 1,304 | 1,466 | 2,770 | |
| 1948 | D | 895 | 177 | 1,551 | |
| 1944 | D | 1,037 | 219 | 1,421 | |
| 1940 | D | 1,326 | 228 | 1,556 | |
| 1936 | D | 1,076 | 116 | 1,192 | |
| 1932 | D | 1,450 | 44 | 1,495 | |
| 1928 | D | 666 | 298 | 965 | |
| 1924 | D | 929 | 90 | 1,044 | |
| 1920 | D | 1,066 | 115 | 1,393 | |
| 1916 | D | 635 | 24 | 690 | |
| 1912 | D | 534 | 32 | 657 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Tyler County, a heavily forested corner of deep East Texas, recorded an R+73.5 margin in 2024 — among the widest in the state. Its small, predominantly white rural population has shifted steadily toward supermajority Republican preferences over the past two decades.
The unraveling was not abrupt. The Democratic margin in Tyler County peaked at ninety-four points in 1932; 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 twenty-one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Tyler County's median household income of $55,396 is among the lowest of any county in the United States; 18% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Jasper County and Fannin County.