| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,061 | 7,325 | 8,490 | |
| 2020 | R | 1,397 | 8,544 | 10,026 | |
| 2016 | R | 1,370 | 7,911 | 9,512 | |
| 2012 | R | 2,428 | 6,191 | 8,855 | |
| 2008 | R | 3,582 | 4,587 | 8,338 | |
| 2004 | D | 5,983 | 4,612 | 10,655 | |
| 2000 | D | 6,049 | 3,866 | 10,043 | |
| 1996 | D | 7,584 | 2,229 | 10,875 | |
| 1992 | D | 7,342 | 2,584 | 10,873 | |
| 1988 | D | 7,429 | 2,896 | 10,350 | |
| 1984 | D | 8,434 | 4,275 | 12,726 | |
| 1980 | D | 9,328 | 3,716 | 13,280 | |
| 1976 | D | 8,655 | 3,010 | 11,665 | |
| 1972 | R | 5,585 | 7,484 | 13,069 | |
| 1968 | D | 8,677 | 3,988 | 13,798 | |
| 1964 | D | 12,266 | 3,154 | 15,420 | |
| 1960 | D | 11,259 | 4,903 | 16,162 | |
| 1956 | D | 10,014 | 7,916 | 17,930 | |
| 1952 | D | 12,856 | 6,852 | 19,708 | |
| 1948 | D | 10,362 | 4,896 | 15,292 | |
| 1944 | D | 9,550 | 4,711 | 14,261 | |
| 1940 | D | 11,619 | 5,776 | 17,395 | |
| 1936 | D | 11,278 | 5,771 | 17,064 | |
| 1932 | D | 8,657 | 7,801 | 16,501 | |
| 1928 | R | 6,801 | 6,904 | 13,732 | |
| 1924 | D | 5,313 | 4,656 | 11,070 | |
| 1920 | D | 4,934 | 3,972 | 8,906 | |
| 1916 | D | 2,472 | 2,223 | 4,705 | |
| 1912 | D | 1,832 | 1,569 | 4,357 | |
| 1908 | R | 1,520 | 2,058 | 3,596 | |
| 1904 | D | 1,652 | 1,607 | 3,274 | |
| 1900 | R | 838 | 1,363 | 2,201 | |
| 1896 | D | 1,204 | 632 | 1,841 | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Mingo County, once a stronghold of union-driven Democratic loyalty rooted in its coal-mining heritage, has shifted so decisively that the 2024 presidential margin of R+73.8 ranks among the widest in West Virginia.
The unraveling was not abrupt. The Democratic margin in Mingo County peaked at fifty-nine points in 1964; it narrowed steadily over the late twentieth century. The 2008 election delivered the county to the Republican party for the first time in many years, by a margin of twelve points. By 2024, the margin had widened further.
The economic and demographic context is severe. Mingo County's median household income of $38,119 is among the lowest of any county in the United States; 32% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Logan County and Buchanan County.