| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 12,754 | 33,201 | 46,576 | |
| 2020 | R | 14,149 | 33,116 | 48,006 | |
| 2016 | R | 13,294 | 30,487 | 46,735 | |
| 2012 | R | 17,914 | 29,502 | 48,708 | |
| 2008 | R | 19,522 | 29,940 | 50,495 | |
| 2004 | R | 16,470 | 32,580 | 49,256 | |
| 2000 | R | 13,996 | 28,647 | 43,795 | |
| 1996 | R | 15,529 | 24,325 | 43,948 | |
| 1992 | R | 13,777 | 25,322 | 47,350 | |
| 1988 | R | 13,727 | 31,021 | 44,975 | |
| 1984 | R | 12,176 | 33,506 | 45,911 | |
| 1980 | R | 13,140 | 29,070 | 44,154 | |
| 1976 | R | 14,627 | 23,721 | 39,167 | |
| 1972 | R | 10,184 | 26,966 | 38,543 | |
| 1968 | R | 10,994 | 23,124 | 38,349 | |
| 1964 | R | 18,990 | 19,897 | 38,887 | |
| 1960 | R | 14,725 | 28,007 | 42,732 | |
| 1956 | R | 12,042 | 28,388 | 40,430 | |
| 1952 | R | 14,139 | 26,396 | 40,535 | |
| 1948 | R | 13,161 | 17,380 | 30,668 | |
| 1944 | R | 12,564 | 21,024 | 33,588 | |
| 1940 | R | 14,469 | 20,675 | 35,144 | |
| 1936 | D | 16,500 | 15,079 | 33,592 | |
| 1932 | D | 16,676 | 14,678 | 31,930 | |
| 1928 | R | 9,462 | 20,693 | 30,337 | |
| 1924 | R | 7,378 | 15,711 | 25,437 | |
| 1920 | R | 11,658 | 13,978 | 26,082 | |
| 1916 | D | 7,905 | 5,713 | 14,140 | |
| 1912 | D | 5,696 | 2,638 | 11,815 | |
| 1908 | D | 7,195 | 5,841 | 13,557 | |
| 1904 | R | 4,980 | 6,091 | 11,603 | |
| 1900 | D | 6,540 | 5,281 | 12,018 | |
| 1896 | D | 6,394 | 4,959 | 11,529 | |
| 1892 | D | 4,945 | 3,579 | 9,285 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Allen County's Republican presidential margins have exceeded 40 points in recent cycles, reflecting a rural and small-city electorate where manufacturing heritage and evangelical church density track closely with statewide GOP overperformance.
The Republican margin in Allen County reached its widest at forty-six points in 1984. The margin in 2024 was forty-four points, in line with the county's deep historical pattern.
Allen County's loyalty is rooted in its place. Median household income of $64,038, a 80% non-Hispanic-white share, and a population of 101,348 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Shenandoah County and McIntosh County.
