| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 399 | 1,836 | 2,262 | |
| 2020 | R | 409 | 1,857 | 2,305 | |
| 2016 | R | 353 | 1,726 | 2,205 | |
| 2012 | R | 568 | 1,574 | 2,191 | |
| 2008 | R | 657 | 1,498 | 2,221 | |
| 2004 | R | 541 | 1,884 | 2,471 | |
| 2000 | R | 644 | 1,701 | 2,443 | |
| 1996 | R | 757 | 1,383 | 2,469 | |
| 1992 | R | 834 | 1,277 | 2,959 | |
| 1988 | R | 1,114 | 1,750 | 2,891 | |
| 1984 | R | 947 | 2,132 | 3,098 | |
| 1980 | R | 899 | 2,180 | 3,282 | |
| 1976 | R | 1,424 | 1,753 | 3,224 | |
| 1972 | R | 999 | 2,089 | 3,088 | |
| 1968 | R | 1,127 | 1,894 | 3,193 | |
| 1964 | D | 2,181 | 1,546 | 3,727 | |
| 1960 | R | 1,570 | 2,441 | 4,011 | |
| 1956 | R | 1,485 | 2,672 | 4,157 | |
| 1952 | R | 1,371 | 3,251 | 4,622 | |
| 1948 | R | 1,827 | 2,036 | 3,863 | |
| 1944 | R | 1,607 | 2,685 | 4,292 | |
| 1940 | R | 1,873 | 3,017 | 4,890 | |
| 1936 | D | 2,778 | 2,317 | 5,171 | |
| 1932 | D | 3,420 | 1,812 | 5,333 | |
| 1928 | R | 1,684 | 3,299 | 5,027 | |
| 1924 | R | 1,596 | 2,595 | 4,804 | |
| 1920 | R | 1,337 | 2,637 | 4,116 | |
| 1916 | D | 1,732 | 1,411 | 3,243 | |
| 1912 | D | 1,312 | 738 | 3,017 | |
| 1908 | D | 1,523 | 1,519 | 3,088 | |
| 1904 | R | 585 | 1,615 | 2,648 | |
| 1900 | D | 1,480 | 1,471 | 2,997 | |
| 1896 | D | 1,355 | 1,137 | 2,557 | |
| 1892 | D | 990 | 159 | 2,482 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Nuckolls County, anchored by the small city of Nelson, sits in south-central Nebraska's agricultural plains and has delivered Republican presidential margins above 60 points in recent cycles, reflecting the deep-red alignment common to the state's sparsely populated farming counties.
The Republican margin in Nuckolls County reached its widest at sixty-four points in 2024. The margin in 2024 was sixty-four points, in line with the county's deep historical pattern.
Nuckolls County's loyalty is rooted in its place. Median household income of $73,976, a 94% non-Hispanic-white share, and a population of 4,087 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 Fillmore County and Thayer County.