| STATE | PRIMARY DATE |
| AL | June 4 |
| AK | August 27 |
| AZ | September 10 |
| AR | May 21 |
| CA | March 5 |
| CO | August 13 |
| CT | September 10 |
| DC | September 10 |
| DE | September 7 |
| FL | September 10 |
| GA | August 20 |
| HI | September 21 |
| ID | May 28 |
| IL | March 19 |
| IN | May 7 |
| IA | June 4 |
| KS | August 6 |
| KY | May 28 |
| LA | State/Local Primary: October 5; Congressional Primary: November 5 |
| ME | June 11 |
| MD | September 10 |
| MA | September 17 |
| MI | August 6 |
| MN | September 10 |
| MS | June 4 |
| MO | August 6 |
| MT | June 4 |
| NE | May 14 |
| NV | September 3 |
| NH | September 10 |
| NJ | June 4 |
| NM | June 4 |
| NY | September 10 |
| NC | May 7 |
| ND | June 11 |
| OH | May 7 |
| OK | September 17 |
| OR | May 21 |
| PA | May 21 |
| RI | September 10 |
| SC | June 11 |
| SD | June 4 |
| TN | August 1 |
| TX | March 12 |
| UT | June 25 |
| VT | September 10 |
| VA | May 6 |
| WA | September 17 |
| WV | May 14 |
| WI | September 10 |
| WY | August 20 |
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