| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 625 | 3,364 | 4,018 | |
| 2020 | R | 706 | 3,165 | 3,906 | |
| 2016 | R | 776 | 2,966 | 3,904 | |
| 2012 | R | 1,302 | 2,262 | 3,692 | |
| 2008 | R | 1,637 | 2,075 | 3,838 | |
| 2004 | R | 1,618 | 2,511 | 4,167 | |
| 2000 | R | 1,430 | 2,245 | 3,781 | |
| 1996 | D | 1,882 | 1,339 | 3,796 | |
| 1992 | D | 2,135 | 1,224 | 3,952 | |
| 1988 | D | 1,796 | 1,696 | 3,500 | |
| 1984 | R | 1,580 | 1,779 | 3,359 | |
| 1980 | D | 1,818 | 1,523 | 3,401 | |
| 1976 | D | 1,960 | 989 | 2,971 | |
| 1972 | R | 1,134 | 1,623 | 2,757 | |
| 1968 | D | 1,216 | 1,048 | 2,710 | |
| 1964 | D | 2,312 | 904 | 3,216 | |
| 1960 | R | 1,386 | 1,429 | 2,815 | |
| 1956 | D | 1,822 | 1,171 | 2,993 | |
| 1952 | D | 2,028 | 1,291 | 3,327 | |
| 1948 | D | 2,352 | 805 | 3,174 | |
| 1944 | D | 2,093 | 1,110 | 3,214 | |
| 1940 | D | 2,806 | 1,589 | 4,423 | |
| 1936 | D | 3,069 | 1,225 | 4,349 | |
| 1932 | D | 2,949 | 879 | 3,924 | |
| 1928 | D | 1,884 | 1,542 | 3,456 | |
| 1924 | D | 2,107 | 1,174 | 3,415 | |
| 1920 | D | 1,661 | 1,639 | 3,371 | |
| 1916 | D | 1,213 | 788 | 2,154 | |
| 1912 | D | 1,110 | 385 | 2,095 | |
| 1908 | D | 1,151 | 849 | 2,074 | |
| 1904 | D | 1,006 | 697 | 1,757 | |
| 1900 | D | 1,279 | 716 | 2,033 | |
| 1896 | D | 1,186 | 689 | 1,880 | |
| 1892 | D | 1,005 | 541 | 1,589 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Shannon County, a sparsely populated Ozarks county with fewer than 9,000 residents, recorded an R+68.2 presidential margin in 2024—among the widest in the state and a reflection of deep rural realignment across the region.
The unraveling was not abrupt. The Democratic margin in Shannon County peaked at fifty-three points in 1932; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of twenty-two points. By 2024, the margin had widened further.
The economic and demographic context is severe. Shannon County's median household income of $55,222 is among the lowest of any county in the United States; 18% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Jefferson County and Linn County.