| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 17 | 264 | 283 | |
| 2020 | R | 21 | 260 | 285 | |
| 2016 | R | 17 | 244 | 273 | |
| 2012 | R | 30 | 227 | 262 | |
| 2008 | R | 39 | 217 | 263 | |
| 2004 | R | 24 | 240 | 266 | |
| 2000 | R | 26 | 235 | 272 | |
| 1996 | R | 25 | 187 | 258 | |
| 1992 | R | 18 | 148 | 264 | |
| 1988 | R | 58 | 210 | 269 | |
| 1984 | R | 33 | 248 | 281 | |
| 1980 | R | 57 | 245 | 319 | |
| 1976 | R | 64 | 193 | 262 | |
| 1972 | R | 45 | 236 | 281 | |
| 1968 | R | 47 | 218 | 280 | |
| 1964 | R | 126 | 243 | 369 | |
| 1960 | R | 68 | 283 | 351 | |
| 1956 | R | 68 | 248 | 316 | |
| 1952 | R | 62 | 307 | 369 | |
| 1948 | R | 147 | 199 | 346 | |
| 1944 | R | 153 | 268 | 421 | |
| 1940 | R | 194 | 348 | 542 | |
| 1936 | R | 235 | 312 | 550 | |
| 1932 | D | 338 | 237 | 596 | |
| 1928 | R | 169 | 402 | 579 | |
| 1924 | R | 101 | 143 | 410 | |
| 1920 | R | 94 | 167 | 293 | |
| 1916 | D | 286 | 143 | 445 | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Arthur County's 444 residents make it among the smallest counties by population in the United States, and its 2024 presidential margin of R+87.6 reflects the lopsided partisanship typical of Nebraska's remote Sandhills ranching communities.
The Republican margin in Arthur County reached its widest at eighty-seven points in 2024. The margin in 2024 was eighty-seven points, in line with the county's deep historical pattern.
Arthur County's loyalty is rooted in its place. Median household income of $76,250, a 93% non-Hispanic-white share, and a population of 484 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 Banner County and Keith County.
