| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 6,908 | 24,866 | 32,133 | |
| 2020 | R | 6,607 | 21,848 | 29,065 | |
| 2016 | R | 5,575 | 18,159 | 25,114 | |
| 2012 | R | 7,734 | 14,332 | 22,776 | |
| 2008 | R | 10,234 | 12,924 | 23,550 | |
| 2004 | R | 8,368 | 11,316 | 19,839 | |
| 2000 | R | 6,961 | 8,549 | 15,913 | |
| 1996 | D | 5,644 | 4,897 | 12,611 | |
| 1992 | D | 5,453 | 3,718 | 12,765 | |
| 1988 | R | 4,605 | 5,305 | 9,938 | |
| 1984 | R | 3,290 | 6,137 | 9,427 | |
| 1980 | R | 4,110 | 4,963 | 9,335 | |
| 1976 | D | 4,473 | 3,581 | 8,140 | |
| 1972 | R | 2,784 | 5,127 | 7,911 | |
| 1968 | R | 3,142 | 3,185 | 7,624 | |
| 1964 | D | 4,993 | 2,271 | 7,264 | |
| 1960 | D | 3,793 | 3,471 | 7,264 | |
| 1956 | D | 3,990 | 3,114 | 7,104 | |
| 1952 | D | 4,020 | 3,458 | 7,487 | |
| 1948 | D | 4,190 | 2,135 | 6,336 | |
| 1944 | D | 3,773 | 2,910 | 6,698 | |
| 1940 | D | 4,420 | 3,035 | 7,480 | |
| 1936 | D | 4,625 | 2,258 | 6,924 | |
| 1932 | D | 4,428 | 1,604 | 6,061 | |
| 1928 | D | 3,356 | 2,722 | 6,088 | |
| 1924 | D | 3,419 | 2,563 | 6,157 | |
| 1920 | D | 3,660 | 3,209 | 6,909 | |
| 1916 | D | 2,468 | 1,642 | 4,140 | |
| 1912 | D | 2,326 | 1,258 | 3,793 | |
| 1908 | D | 2,555 | 1,620 | 4,207 | |
| 1904 | D | 2,295 | 1,462 | 3,835 | |
| 1900 | D | 2,761 | 1,563 | 4,407 | |
| 1896 | D | 3,003 | 1,564 | 4,584 | |
| 1892 | D | 2,508 | 1,380 | 3,926 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Situated on the northern fringe of the St. Louis metro, Lincoln County has shifted sharply rightward over two decades as rural identity overtook its modest suburban growth, delivering presidential margins above 50 points in recent cycles.
The Republican margin in Lincoln County reached its widest at fifty-six points in 2024. The margin in 2024 was fifty-six points, in line with the county's deep historical pattern.
Lincoln County's loyalty is rooted in its place. Median household income of $89,278, a 92% non-Hispanic-white share, and a population of 63,057 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Madison County and Fayette County.
