| State | Primary Date | Election Date | Run-Off Date |
| Oklahoma Special | December 9, 2025 | February 2, 2026 | |
| Florida Special | January 13, 2026 | March 24, 2026 | |
| Michigan Special | February 2, 2026 | May 5, 2026 | |
| Texas | March 3, 2026 | November 3, 2026 | June 26, 2026 |
| Arkansas | March 3, 2026 | November 3, 2026 | March 31, 2026 |
| North Carolina | March 3, 2026 | November 3, 2026 | June 12, 2026 |
| Mississippi | March 10, 2026 | November 3, 2026 | April 7, 2026 |
| Illinois | March 17, 2026 | November 3, 2026 | |
| California | June 2, 2026 | November 3, 2026 | |
| Iowa | June 2, 2026 | November 3, 2026 | |
| Montana | June 2, 2026 | November 3, 2026 | |
| New Jersey | June 2, 2026 | November 3, 2026 | |
| New Mexico | June 2, 2026 | November 3, 2026 | |
| South Dakota | June 2, 2026 | November 3, 2026 | July 28, 2026 |
| Indiana | June 5, 2026 | November 3, 2026 | |
| Ohio | June 5, 2026 | November 3, 2026 | |
| Maine | June 9, 2026 | November 3, 2026 | |
| Nevada | June 9, 2026 | November 3, 2026 | |
| North Dakota | June 9, 2026 | November 3, 2026 | |
| South Carolina | June 9, 2026 | November 3, 2026 | June 23, 2026 |
| Nebraska | June 12, 2026 | November 3, 2026 | |
| West Virginia | June 12, 2026 | November 3, 2026 | |
| Oklahoma | June 16, 2026 | November 3, 2026 | |
| Virginia | June 16, 2026 | November 3, 2026 | |
| Alabama | June 19, 2026 | November 3, 2026 | June 26, 2026 |
| Georgia | June 19, 2026 | November 3, 2026 | |
| Idaho | June 19, 2026 | November 3, 2026 | |
| Kentucky | June 19, 2026 | November 3, 2026 | |
| Oregon | June 19, 2026 | November 3, 2026 | |
| Pennsylvania | June 19, 2026 | November 3, 2026 | |
| Maryland | June 23, 2026 | November 3, 2026 | |
| New York | June 23, 2026 | November 3, 2026 | |
| Utah | June 23, 2026 | November 3, 2026 | |
| Colorado | June 30, 2026 | November 3, 2026 | |
| Arizona | August 4, 2026 | November 3, 2026 | |
| Kansas | August 4, 2026 | November 3, 2026 | |
| Michigan | August 4, 2026 | November 3, 2026 | |
| Missouri | August 4, 2026 | November 3, 2026 | |
| Washington | August 4, 2026 | November 3, 2026 | |
| Tennessee | August 6, 2026 | November 3, 2026 | |
| Hawaii | August 8, 2026 | November 3, 2026 | |
| Connecticut | August 11, 2026 | November 3, 2026 | |
| Minnesota | August 11, 2026 | November 3, 2026 | |
| Vermont | August 11, 2026 | November 3, 2026 | |
| Wisconsin | August 11, 2026 | November 3, 2026 | |
| Alaska | August 18, 2026 | November 3, 2026 | |
| Florida | August 18, 2026 | November 3, 2026 | |
| Wyoming | August 18, 2026 | November 3, 2026 | |
| Massachusetts | September 1, 2026 | November 3, 2026 | |
| New Hampshire | September 8, 2026 | November 3, 2026 | |
| Rhode Island | September 8, 2026 | November 3, 2026 | |
| Delaware | September 15, 2026 | November 3, 2026 | |
| Louisiana | November 3, 2026 | November 3, 2026 | December 26, 2026 |
