| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,726 | 6,498 | 9,330 | |
| 2020 | R | 2,904 | 6,451 | 9,533 | |
| 2016 | R | 2,789 | 5,977 | 9,274 | |
| 2012 | R | 3,790 | 5,104 | 9,108 | |
| 2008 | R | 4,712 | 4,962 | 9,848 | |
| 2004 | R | 4,479 | 5,389 | 9,939 | |
| 2000 | D | 4,585 | 4,572 | 9,355 | |
| 1996 | D | 4,765 | 2,931 | 8,854 | |
| 1992 | D | 4,643 | 2,688 | 10,166 | |
| 1988 | D | 5,039 | 4,625 | 9,696 | |
| 1984 | R | 4,281 | 6,042 | 10,323 | |
| 1980 | R | 4,943 | 5,218 | 10,576 | |
| 1976 | D | 5,890 | 4,883 | 10,845 | |
| 1972 | R | 3,460 | 6,641 | 10,101 | |
| 1968 | R | 4,646 | 4,698 | 10,048 | |
| 1964 | D | 7,308 | 3,635 | 10,943 | |
| 1960 | R | 5,969 | 6,085 | 12,054 | |
| 1956 | R | 5,841 | 5,970 | 11,811 | |
| 1952 | R | 6,318 | 6,926 | 13,271 | |
| 1948 | D | 7,185 | 4,822 | 12,029 | |
| 1944 | D | 6,715 | 6,022 | 12,753 | |
| 1940 | D | 7,988 | 7,336 | 15,352 | |
| 1936 | D | 8,622 | 6,108 | 14,776 | |
| 1932 | D | 8,389 | 3,783 | 12,245 | |
| 1928 | R | 6,251 | 6,780 | 13,044 | |
| 1924 | D | 6,564 | 4,990 | 12,125 | |
| 1920 | D | 7,114 | 5,613 | 12,812 | |
| 1916 | D | 4,503 | 2,966 | 7,564 | |
| 1912 | D | 3,929 | 1,443 | 6,892 | |
| 1908 | D | 4,189 | 2,926 | 7,184 | |
| 1904 | D | 3,710 | 2,805 | 6,666 | |
| 1900 | D | 4,901 | 2,814 | 7,836 | |
| 1896 | D | 5,615 | 3,050 | 8,752 | |
| 1892 | D | 4,565 | 2,622 | 7,872 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Saline County, anchored by Marshall along the Missouri River, has shifted from a competitive rural battleground to a lopsided Republican stronghold over two decades, mirroring the broader realignment of small-town Missouri agriculture counties.
The Democratic margin in Saline County peaked at thirty-eight points in 1932. By 2004 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Saline County's median household income of $57,931 sits well below state and national norms, and 16% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Perry County and Swain County.