| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 755 | 3,987 | 4,786 | |
| 2020 | R | 814 | 3,892 | 4,771 | |
| 2016 | R | 794 | 3,561 | 4,880 | |
| 2012 | R | 1,299 | 3,165 | 4,538 | |
| 2008 | R | 1,599 | 2,853 | 4,548 | |
| 2004 | R | 1,563 | 2,825 | 4,424 | |
| 2000 | R | 1,554 | 2,216 | 3,854 | |
| 1996 | R | 1,540 | 1,560 | 3,636 | |
| 1992 | D | 1,732 | 1,356 | 4,015 | |
| 1988 | R | 1,552 | 1,919 | 3,480 | |
| 1984 | R | 1,388 | 2,267 | 3,655 | |
| 1980 | R | 1,732 | 1,985 | 3,789 | |
| 1976 | D | 1,796 | 1,485 | 3,294 | |
| 1972 | R | 1,219 | 2,082 | 3,301 | |
| 1968 | R | 1,185 | 1,438 | 3,026 | |
| 1964 | D | 2,063 | 1,183 | 3,246 | |
| 1960 | D | 1,716 | 1,684 | 3,400 | |
| 1956 | D | 1,885 | 1,392 | 3,277 | |
| 1952 | D | 1,783 | 1,501 | 3,290 | |
| 1948 | D | 1,948 | 894 | 2,846 | |
| 1944 | D | 1,824 | 1,519 | 3,366 | |
| 1940 | D | 2,078 | 1,749 | 3,836 | |
| 1936 | D | 2,414 | 1,306 | 3,740 | |
| 1932 | D | 2,758 | 745 | 3,521 | |
| 1928 | D | 1,808 | 1,415 | 3,231 | |
| 1924 | D | 1,913 | 1,004 | 3,042 | |
| 1920 | D | 1,677 | 1,445 | 3,150 | |
| 1916 | D | 1,319 | 725 | 2,074 | |
| 1912 | D | 1,096 | 448 | 1,729 | |
| 1908 | D | 1,309 | 703 | 2,028 | |
| 1904 | D | 1,184 | 599 | 1,811 | |
| 1900 | D | 1,273 | 544 | 1,823 | |
| 1896 | D | 1,385 | 546 | 1,936 | |
| 1892 | D | 1,119 | 469 | 1,617 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Maries County, tucked in the Ozark fringe south of Jefferson City, delivers some of the widest presidential margins in Missouri, reflecting the deep Republican consolidation that has reshaped small, majority-white rural counties across the state over the past two decades.
The Democratic margin in Maries County peaked at fifty-seven points in 1932. By 1996 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-eight points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Maries County's median household income of $59,455 sits well below state and national norms, and 14% 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 Benton County and Ripley County.