| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,475 | 14,407 | 18,108 | |
| 2020 | R | 3,472 | 13,557 | 17,245 | |
| 2016 | R | 3,311 | 11,826 | 15,716 | |
| 2012 | R | 4,196 | 10,080 | 14,276 | |
| 2008 | R | 5,085 | 10,277 | 15,362 | |
| 2004 | R | 5,591 | 10,017 | 15,608 | |
| 2000 | R | 5,514 | 7,618 | 13,353 | |
| 1996 | R | 5,094 | 5,230 | 11,939 | |
| 1992 | D | 4,842 | 4,840 | 12,426 | |
| 1988 | R | 4,889 | 5,248 | 10,212 | |
| 1984 | R | 3,789 | 6,690 | 10,542 | |
| 1980 | R | 4,244 | 5,302 | 9,819 | |
| 1976 | D | 4,924 | 3,642 | 8,657 | |
| 1972 | R | 2,135 | 5,476 | 7,789 | |
| 1968 | R | 2,129 | 3,168 | 6,699 | |
| 1964 | D | 3,702 | 2,743 | 6,445 | |
| 1960 | R | 2,282 | 3,639 | 5,921 | |
| 1956 | R | 2,679 | 3,078 | 5,757 | |
| 1952 | R | 2,686 | 3,399 | 6,085 | |
| 1948 | D | 3,157 | 2,343 | 5,500 | |
| 1944 | R | 2,373 | 2,660 | 5,126 | |
| 1940 | D | 3,417 | 3,305 | 6,739 | |
| 1936 | D | 3,398 | 2,632 | 6,045 | |
| 1932 | D | 3,684 | 1,469 | 5,153 | |
| 1928 | R | 1,706 | 2,603 | 4,360 | |
| 1924 | D | 1,729 | 1,563 | 3,555 | |
| 1920 | R | 1,282 | 2,059 | 3,480 | |
| 1916 | D | 1,227 | 837 | 2,297 | |
| 1912 | D | 983 | 732 | 1,899 | |
| 1908 | D | 974 | 625 | 1,653 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Delaware County, nestled in the Ozark foothills along the Arkansas border, has shifted decisively toward Republican candidates over the past two decades, posting a 60-point presidential margin in 2024 despite a modest population base of roughly 37,000 residents.
The Republican margin in Delaware County reached its widest at sixty points in 2024. The margin in 2024 was sixty points, in line with the county's deep historical pattern.
Delaware County's loyalty is rooted in its place. Median household income of $56,676, a 63% non-Hispanic-white share, and a population of 41,279 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 Pawnee County and Tishomingo County.