Filing Deadlines, Primary Dates For Various States
| State | Filing Deadlines | Primary |
| Alabama | April 7; June 6(a) | June 6 |
| Alaska | June 1 | Aug. 22 |
| Arizona | June 14; Aug. 3(c) | Sept. 12 |
| Arkansas | April 4 | May 23 |
| California(f) | March 10; May 23(c) | June 6 |
| Colorado(f) | May 25; June 2(c) | Aug. 8 |
| Connecticut | June 6 | Aug. 8 |
| Delaware | July 28 | Sept. 12 |
| Florida | May 12 | Sept. 5 |
| Georgia | April 28 | July 18 |
| Hawaii | July 25 | Sept. 23 |
| Idaho | March 17; May 9(c) | May 23 |
| Illinois | Passed | March 21 |
| Indiana | Passed | May 2 |
| Iowa | March 17 | June 6 |
| Kansas | June 12 | Aug. 1 |
| Kentucky | Passed | May 16 |
| Louisiana | Aug. 11 | Nov. 7 |
| Maine | March 15; June 1(b) | June 13 |
| Maryland | July 3 | Sept. 12 |
| Massachusetts | May 9; Aug 1(b) | Sept. 19 |
| Michigan | May 16; July 20(b) | Aug. 8 |
| Minnesota | July 18 | Sept. 12 |
| Mississippi | March 1 | June 6 |
| Missouri | March 28 | Aug. 8 |
| Montana | March 23 | June 6 |
| Nebraska | Passed(d); March 1(e) | May 9 |
| Nevada | May 12 | Aug. 15 |
| New Hampshire | June 16 | Sept. 12 |
| New Jersey | April 10 | June 6 |
| New Mexico | Passed | June 6 |
| New York | July 13 | Sept. 12 |
| North Carolina | Feb. 28 | May 2 |
| North Dakota | April 17 | June 13 |
| Ohio | Passed; March 13(c); May 1(a) | May 2 |
| Oklahoma | June 7 | July 25 |
| Oregon | March 7 | May 16 |
| Pennsylvania | March 7 | May 16 |
| Rhode Island | June 28 | Sept. 12 |
| South Carolina | March 30 | June 13 |
| South Dakota | April 4 | June 6 |
| Tennessee | April 6 | Aug. 3 |
| Texas | Passed | March 7 |
| Utah(f) | March 17 | June 27 |
| Vermont | July 17 | Sept. 12 |
| Virginia(f) | April 14 | June 13 |
| Washington | July 28 | Sept. 19 |
| West Virginia | Passed | May 9 |
| Wisconsin | July 11 | Sept. 12 |
| Wyoming | June 2 | Aug. 22 |
(a)Independent candidates
(b)Non-party candidates
(c)Write-in candidates
(d)Incumbents
(e)Non-incumbents
(f)These states also have a party convention nominating process.
