| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,618 | 6,151 | 7,853 | |
| 2020 | R | 1,717 | 5,863 | 7,706 | |
| 2016 | R | 1,806 | 5,274 | 7,428 | |
| 2012 | R | 2,582 | 4,577 | 7,321 | |
| 2008 | R | 3,487 | 4,268 | 7,881 | |
| 2004 | R | 3,670 | 4,314 | 8,040 | |
| 2000 | R | 3,557 | 3,648 | 7,351 | |
| 1996 | D | 3,495 | 2,209 | 6,693 | |
| 1992 | D | 3,609 | 2,255 | 7,336 | |
| 1988 | D | 3,816 | 3,271 | 7,100 | |
| 1984 | R | 3,313 | 3,933 | 7,246 | |
| 1980 | R | 3,454 | 3,932 | 7,591 | |
| 1976 | D | 3,770 | 3,355 | 7,162 | |
| 1972 | R | 2,659 | 4,452 | 7,111 | |
| 1968 | D | 3,192 | 3,072 | 7,067 | |
| 1964 | D | 5,273 | 1,944 | 7,217 | |
| 1960 | D | 4,096 | 3,900 | 7,996 | |
| 1956 | D | 4,232 | 3,474 | 7,706 | |
| 1952 | D | 4,582 | 3,836 | 8,436 | |
| 1948 | D | 4,934 | 2,448 | 7,400 | |
| 1944 | D | 4,659 | 3,351 | 8,032 | |
| 1940 | D | 5,742 | 3,707 | 9,489 | |
| 1936 | D | 5,898 | 2,871 | 8,827 | |
| 1932 | D | 5,783 | 2,462 | 8,379 | |
| 1928 | R | 3,749 | 4,569 | 8,347 | |
| 1924 | D | 4,040 | 3,715 | 7,999 | |
| 1920 | D | 5,034 | 3,860 | 8,963 | |
| 1916 | D | 3,344 | 2,322 | 5,724 | |
| 1912 | D | 2,720 | 1,901 | 4,856 | |
| 1908 | D | 3,326 | 2,403 | 5,752 | |
| 1904 | D | 3,113 | 2,445 | 5,608 | |
| 1900 | D | 3,747 | 2,534 | 6,334 | |
| 1896 | D | 3,839 | 2,884 | 6,761 | |
| 1892 | D | 3,655 | 2,564 | 6,293 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pike County sits on the Mississippi River northeast of St. Louis and has swung heavily Republican over the past two decades, recording a nearly 58-point margin in 2024 — among the widest in the state.
The unraveling was not abrupt. The Democratic margin in Pike County peaked at forty-six points in 1964; 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 one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Pike County's median household income of $54,989 is among the lowest of any county in the United States; 16% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Wetzel County and Russell County.