| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,959 | 4,526 | 7,657 | |
| 2020 | R | 3,438 | 4,616 | 8,395 | |
| 2016 | R | 3,620 | 4,404 | 8,220 | |
| 2012 | R | 3,811 | 4,343 | 8,409 | |
| 2008 | R | 4,267 | 4,608 | 9,094 | |
| 2004 | D | 4,990 | 4,144 | 9,211 | |
| 2000 | D | 4,661 | 3,776 | 8,626 | |
| 1996 | D | 5,281 | 2,112 | 8,122 | |
| 1992 | D | 5,767 | 2,403 | 8,922 | |
| 1988 | D | 4,675 | 3,389 | 8,130 | |
| 1984 | D | 4,638 | 4,185 | 8,853 | |
| 1980 | D | 6,122 | 2,743 | 9,153 | |
| 1976 | D | 6,641 | 1,816 | 8,479 | |
| 1972 | R | 2,741 | 4,173 | 6,960 | |
| 1968 | D | 2,733 | 1,642 | 7,151 | |
| 1964 | D | 4,127 | 1,884 | 6,037 | |
| 1960 | D | 3,295 | 1,357 | 5,083 | |
| 1956 | D | 2,809 | 1,973 | 4,840 | |
| 1952 | D | 2,963 | 1,679 | 4,647 | |
| 1948 | D | 1,750 | 383 | 2,509 | |
| 1944 | D | 1,981 | 637 | 2,621 | |
| 1940 | D | 2,008 | 311 | 2,327 | |
| 1936 | D | 1,962 | 193 | 2,163 | |
| 1932 | D | 3,037 | 183 | 3,235 | |
| 1928 | D | 1,817 | 913 | 2,736 | |
| 1924 | D | 1,223 | 483 | 1,910 | |
| 1920 | D | 1,507 | 1,020 | 2,546 | |
| 1916 | D | 1,975 | 678 | 2,653 | |
| 1912 | D | 1,051 | 376 | 1,726 | |
| 1908 | D | 1,206 | 1,007 | 2,316 | |
| 1904 | R | 722 | 732 | 1,636 | |
| 1900 | D | 1,232 | 753 | 2,119 | |
| 1896 | D | 1,910 | 833 | 2,825 | |
| 1892 | D | 1,404 | 775 | 3,674 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Clark County has trended steadily Republican in recent presidential cycles, posting a 20-point margin in 2024, yet its county seat of Arkadelphia anchors a small college-town demographic that keeps local races occasionally competitive.
The 2008 election was the turning point, when the Republican candidate carried the county by four points. The 2024 margin was twenty points, in line with the county's new direction.
The demographics suggest why. A population of 21,125, a 70% non-Hispanic-white share, and a median household income of $52,034 situate the county in the broader realignment patterns of recent cycles. The county's voting pattern over the last decade is most similar to that of Wilkinson County and Baker County.
