| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 720 | 3,774 | 4,561 | |
| 2020 | R | 712 | 3,610 | 4,391 | |
| 2016 | R | 742 | 3,321 | 4,237 | |
| 2012 | R | 1,244 | 2,832 | 4,076 | |
| 2008 | R | 1,411 | 3,031 | 4,442 | |
| 2004 | R | 1,660 | 2,805 | 4,465 | |
| 2000 | R | 1,703 | 2,069 | 3,849 | |
| 1996 | D | 1,788 | 1,457 | 3,854 | |
| 1992 | D | 1,912 | 1,531 | 4,524 | |
| 1988 | D | 2,203 | 2,000 | 4,234 | |
| 1984 | R | 1,687 | 3,030 | 4,761 | |
| 1980 | R | 1,694 | 2,640 | 4,470 | |
| 1976 | D | 2,195 | 2,077 | 4,311 | |
| 1972 | R | 1,096 | 3,293 | 4,535 | |
| 1968 | R | 1,314 | 2,116 | 4,510 | |
| 1964 | D | 2,644 | 2,142 | 4,786 | |
| 1960 | R | 2,125 | 3,014 | 5,139 | |
| 1956 | R | 2,268 | 3,168 | 5,436 | |
| 1952 | R | 2,657 | 3,226 | 5,883 | |
| 1948 | D | 2,688 | 2,119 | 4,807 | |
| 1944 | R | 2,581 | 2,730 | 5,326 | |
| 1940 | D | 3,615 | 3,406 | 7,060 | |
| 1936 | D | 3,512 | 2,552 | 6,084 | |
| 1932 | D | 3,773 | 1,900 | 5,673 | |
| 1928 | R | 1,763 | 2,930 | 4,712 | |
| 1924 | R | 2,049 | 2,296 | 4,499 | |
| 1920 | R | 1,697 | 2,679 | 4,451 | |
| 1916 | D | 1,355 | 1,322 | 2,861 | |
| 1912 | R | 1,012 | 1,087 | 2,271 | |
| 1908 | R | 909 | 1,020 | 1,992 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Nowata County, a small rural enclave in northeastern Oklahoma's Verdigris River valley, recorded a 67-point Republican presidential margin in 2024, reflecting the broader realignment of rural, energy-dependent communities away from competitive two-party voting over the past two decades.
The Democratic margin in Nowata County peaked at thirty-three points in 1932. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-seven points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Nowata County's median household income of $54,333 sits well below state and national norms, and 17% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Mayes County and Craig County.