| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,372 | 5,550 | 7,048 | |
| 2020 | R | 1,538 | 5,782 | 7,459 | |
| 2016 | R | 1,347 | 5,274 | 6,936 | |
| 2012 | R | 1,736 | 4,375 | 6,294 | |
| 2008 | R | 2,109 | 4,335 | 6,603 | |
| 2004 | R | 2,475 | 4,445 | 6,999 | |
| 2000 | R | 2,355 | 3,606 | 6,134 | |
| 1996 | D | 2,868 | 2,285 | 6,173 | |
| 1992 | D | 2,931 | 2,413 | 6,563 | |
| 1988 | R | 3,272 | 3,602 | 6,908 | |
| 1984 | R | 2,693 | 5,297 | 8,031 | |
| 1980 | R | 3,455 | 3,747 | 7,611 | |
| 1976 | D | 3,960 | 3,736 | 7,696 | |
| 1972 | R | 2,062 | 5,778 | 7,840 | |
| 1968 | R | 3,168 | 4,027 | 7,835 | |
| 1964 | D | 5,248 | 2,979 | 8,227 | |
| 1960 | R | 3,649 | 5,157 | 8,806 | |
| 1956 | R | 3,194 | 6,203 | 9,397 | |
| 1952 | R | 3,280 | 6,254 | 9,534 | |
| 1948 | R | 3,477 | 4,829 | 8,341 | |
| 1944 | R | 3,350 | 4,984 | 8,334 | |
| 1940 | R | 4,566 | 5,935 | 10,501 | |
| 1936 | D | 5,531 | 5,499 | 11,084 | |
| 1932 | D | 5,546 | 4,704 | 10,381 | |
| 1928 | R | 3,825 | 5,290 | 9,221 | |
| 1924 | R | 4,410 | 4,839 | 9,470 | |
| 1920 | R | 3,310 | 4,618 | 8,082 | |
| 1916 | R | 2,248 | 2,263 | 4,613 | |
| 1912 | D | 1,929 | 1,029 | 4,250 | |
| 1908 | R | 1,832 | 2,239 | 4,241 | |
| 1904 | R | 1,621 | 2,131 | 3,969 | |
| 1900 | D | 1,973 | 1,702 | 3,743 | |
| 1896 | R | 1,718 | 1,813 | 3,603 | |
| 1892 | D | 1,676 | 1,550 | 3,349 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lewis County, anchored by the small city of Weston, has swung decisively toward Republican presidential candidates over the past two decades, posting a 59-point margin in 2024 — a pattern consistent with broader rural Appalachian realignment.
The Republican margin in Lewis County reached its widest at fifty-nine points in 2024. The margin in 2024 was fifty-nine points, in line with the county's deep historical pattern.
Lewis County's loyalty is rooted in its place. Median household income of $56,477, a 90% non-Hispanic-white share, and a population of 16,740 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 Massac County and Carroll County.
