| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,302 | 6,086 | 7,509 | |
| 2020 | R | 1,484 | 6,332 | 7,965 | |
| 2016 | R | 1,413 | 5,754 | 7,530 | |
| 2012 | R | 2,278 | 4,860 | 7,302 | |
| 2008 | R | 3,024 | 4,457 | 7,616 | |
| 2004 | R | 2,849 | 5,032 | 7,980 | |
| 2000 | R | 3,198 | 4,706 | 8,112 | |
| 1996 | D | 3,604 | 3,225 | 7,952 | |
| 1992 | D | 4,016 | 3,342 | 9,037 | |
| 1988 | D | 4,614 | 3,965 | 8,599 | |
| 1984 | R | 3,965 | 5,295 | 9,285 | |
| 1980 | R | 3,695 | 5,301 | 9,361 | |
| 1976 | D | 5,006 | 4,975 | 10,110 | |
| 1972 | R | 3,883 | 5,940 | 9,863 | |
| 1968 | R | 4,191 | 5,035 | 9,939 | |
| 1964 | D | 6,576 | 4,113 | 10,689 | |
| 1960 | R | 5,461 | 5,965 | 11,436 | |
| 1956 | R | 5,382 | 5,920 | 11,318 | |
| 1952 | R | 5,219 | 6,382 | 11,611 | |
| 1948 | D | 5,674 | 4,722 | 10,494 | |
| 1944 | D | 5,833 | 5,633 | 11,532 | |
| 1940 | D | 7,676 | 6,619 | 14,441 | |
| 1936 | D | 8,187 | 5,589 | 13,974 | |
| 1932 | D | 8,013 | 4,181 | 12,452 | |
| 1928 | R | 4,008 | 6,705 | 10,836 | |
| 1924 | D | 5,424 | 4,989 | 10,943 | |
| 1920 | R | 4,279 | 5,564 | 10,280 | |
| 1916 | D | 7,005 | 5,293 | 12,786 | |
| 1912 | D | 3,371 | 1,668 | 6,623 | |
| 1908 | D | 3,859 | 2,932 | 7,265 | |
| 1904 | D | 3,112 | 3,007 | 6,769 | |
| 1900 | D | 4,715 | 3,045 | 8,012 | |
| 1896 | D | 5,329 | 3,111 | 8,579 | |
| 1892 | D | 3,494 | 2,751 | 7,513 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pike County, tucked along the Mississippi River in western Illinois, has shifted decisively rightward over the past two decades — its 2024 presidential margin of R+63.7 points places it among the state's most one-sided counties by raw spread.
The Democratic margin in Pike County peaked at thirty-one points in 1932. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-four points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Pike County's median household income of $59,777 sits well below state and national norms, and 15% 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 Gentry County and Worth County.