| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 371 | 2,175 | 2,567 | |
| 2020 | R | 428 | 1,853 | 2,293 | |
| 2016 | R | 403 | 1,546 | 2,009 | |
| 2012 | R | 506 | 1,439 | 1,959 | |
| 2008 | R | 627 | 1,473 | 2,116 | |
| 2004 | R | 490 | 1,776 | 2,271 | |
| 2000 | R | 562 | 1,507 | 2,084 | |
| 1996 | R | 903 | 1,151 | 2,197 | |
| 1992 | R | 902 | 1,233 | 2,428 | |
| 1988 | R | 1,086 | 1,279 | 2,367 | |
| 1984 | R | 1,009 | 1,617 | 2,630 | |
| 1980 | R | 1,236 | 1,603 | 2,874 | |
| 1976 | D | 1,575 | 1,166 | 2,757 | |
| 1972 | R | 697 | 1,766 | 2,471 | |
| 1968 | D | 1,333 | 1,005 | 2,882 | |
| 1964 | D | 2,281 | 745 | 3,030 | |
| 1960 | D | 1,872 | 953 | 2,843 | |
| 1956 | D | 1,800 | 861 | 2,667 | |
| 1952 | D | 1,762 | 1,351 | 3,121 | |
| 1948 | D | 2,179 | 224 | 2,529 | |
| 1944 | D | 1,968 | 263 | 2,493 | |
| 1940 | D | 2,618 | 255 | 2,878 | |
| 1936 | D | 1,983 | 169 | 2,158 | |
| 1932 | D | 1,930 | 110 | 2,048 | |
| 1928 | R | 754 | 1,268 | 2,029 | |
| 1924 | D | 1,131 | 313 | 1,501 | |
| 1920 | D | 538 | 76 | 682 | |
| 1916 | D | 331 | 15 | 354 | |
| 1912 | D | 121 | 6 | 143 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lynn County's cotton-farming economy and sparse population of roughly 6,500 have anchored some of the widest Republican presidential margins in Texas, with 2024's R+70 result consistent with a decade-long pattern of minimal Democratic support.
The unraveling was not abrupt. The Democratic margin in Lynn County peaked at eighty-nine points in 1916; 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 thirteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Lynn County's median household income of $73,679 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 Gonzales County and Castro County.
