| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 37 | 250 | 292 | |
| 2020 | R | 35 | 280 | 317 | |
| 2016 | R | 30 | 276 | 317 | |
| 2012 | R | 29 | 268 | 303 | |
| 2008 | R | 43 | 266 | 316 | |
| 2004 | R | 38 | 301 | 339 | |
| 2000 | R | 43 | 299 | 349 | |
| 1996 | R | 53 | 284 | 378 | |
| 1992 | R | 64 | 256 | 453 | |
| 1988 | R | 72 | 338 | 411 | |
| 1984 | R | 48 | 363 | 411 | |
| 1980 | R | 63 | 361 | 442 | |
| 1976 | R | 133 | 281 | 422 | |
| 1972 | R | 56 | 343 | 399 | |
| 1968 | R | 64 | 344 | 433 | |
| 1964 | R | 195 | 326 | 521 | |
| 1960 | R | 113 | 420 | 533 | |
| 1956 | R | 149 | 416 | 565 | |
| 1952 | R | 137 | 458 | 595 | |
| 1948 | R | 248 | 252 | 500 | |
| 1944 | R | 248 | 366 | 614 | |
| 1940 | R | 311 | 454 | 765 | |
| 1936 | D | 365 | 342 | 716 | |
| 1932 | D | 431 | 244 | 689 | |
| 1928 | R | 175 | 484 | 662 | |
| 1924 | R | 132 | 253 | 583 | |
| 1920 | R | 176 | 328 | 514 | |
| 1916 | D | 246 | 184 | 452 | |
| 1912 | D | 163 | 126 | 434 | |
| 1908 | R | 160 | 220 | 392 | |
| 1904 | R | 34 | 127 | 181 | |
| 1900 | R | 75 | 103 | 179 | |
| 1896 | R | 60 | 86 | 148 | |
| 1892 | D | 61 | 23 | 156 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Blaine County's 583 residents make it among the smallest counties by population in the nation, and its 2024 presidential margin of R+73.2 reflects the lopsided partisanship typical of Nebraska's sparsely settled Sandhills ranching communities.
The Republican margin in Blaine County reached its widest at seventy-nine points in 2012. The margin in 2024 was seventy-three points, in line with the county's deep historical pattern.
Blaine County's loyalty is rooted in its place. Median household income of $69,583, a 100% non-Hispanic-white share, and a population of 422 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 Kerr County and Thomas County.
