| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,696 | 4,961 | 6,809 | |
| 2020 | R | 1,796 | 4,970 | 6,877 | |
| 2016 | R | 1,501 | 4,431 | 6,314 | |
| 2012 | R | 2,050 | 4,272 | 6,480 | |
| 2008 | R | 2,563 | 4,473 | 7,192 | |
| 2004 | R | 2,424 | 4,705 | 7,231 | |
| 2000 | R | 2,588 | 4,014 | 6,886 | |
| 1996 | R | 2,527 | 3,409 | 6,897 | |
| 1992 | R | 2,799 | 2,926 | 7,893 | |
| 1988 | R | 3,402 | 3,739 | 7,222 | |
| 1984 | R | 2,679 | 4,968 | 7,749 | |
| 1980 | R | 2,923 | 4,613 | 8,077 | |
| 1976 | R | 3,842 | 4,038 | 8,024 | |
| 1972 | R | 2,559 | 5,034 | 7,738 | |
| 1968 | R | 2,725 | 3,950 | 7,464 | |
| 1964 | D | 4,795 | 3,458 | 8,296 | |
| 1960 | R | 3,451 | 5,877 | 9,371 | |
| 1956 | R | 3,005 | 5,886 | 8,920 | |
| 1952 | R | 2,987 | 6,595 | 9,614 | |
| 1948 | R | 3,770 | 5,072 | 8,947 | |
| 1944 | R | 3,233 | 5,420 | 8,679 | |
| 1940 | R | 4,419 | 6,556 | 11,031 | |
| 1936 | R | 5,611 | 5,777 | 11,429 | |
| 1932 | D | 5,616 | 4,212 | 9,965 | |
| 1928 | R | 2,459 | 6,603 | 9,136 | |
| 1924 | R | 2,274 | 5,106 | 8,699 | |
| 1920 | R | 3,195 | 5,150 | 8,467 | |
| 1916 | D | 4,891 | 4,053 | 9,239 | |
| 1912 | D | 1,993 | 1,580 | 5,235 | |
| 1908 | R | 2,386 | 2,929 | 5,511 | |
| 1904 | R | 1,530 | 3,134 | 5,046 | |
| 1900 | R | 2,279 | 2,424 | 4,759 | |
| 1896 | D | 2,601 | 2,177 | 4,816 | |
| 1892 | R | 0 | 2,170 | 4,183 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Neosho County's 2024 presidential margin of R+48.1 reflects a pattern common to the Ozark-edge plains: low population density, an aging workforce tied to agriculture and light manufacturing, and decades of consistent partisan consolidation.
The Democratic margin in Neosho County peaked at sixteen points in 1964. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty-eight points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Neosho County's median household income of $56,618 sits well below state and national norms, and 13% 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 Marshall County and Adams County.