On Wednesday, candidates for national office submitted their nomination petitions:
| U.S. Senator | ||
| Republican | Van Steenwyk, Clair | 10,164 |
| Ward, Kelli | 19,967 | |
| McCain, John | 20,213 | |
| Meluskey, Alex | 12,055 | |
| Democrat | Kirkpatrick, Ann | 11,454 |
| U.S. Representative in Congress – District 1 | ||
| Republican | Kiehne, Gary | 4,197 |
| Rogers, Wendy | 1,862 | |
| Babeu, Paul | 2,188 | |
| Redd, Shawn | 1,339 | |
| Begay, Carlyle W. | 1,934 | |
| Gowan, David | 2,262 | |
| Bennett, Ken | 1,585 | |
| Democrat | O’Halleran, Tom | 3,628 |
| Olivas Miguel | Unavailable |
| U.S. Representative in Congress – District 2 | ||
| Republican | McSally, Martha | 3,698 |
| Democrat | Heinz, Matt | 2,065 |
| Steele, Victoria | Unavailable |
| U.S. Representative in Congress – District 3 | ||
| Democrat | Grijalva, Raul | 3,668 |
| Republican | Edna San Miguel | Unavailable |
| U.S. Representative in Congress – District 4 | ||
| Republican | Gosar, Paul | 3,097 |
| Strauss, Ray | 2,426 | |
| Democrat | Weisser, Mikel | 1,375 |
| U.S. Representative in Congress – District 5 | ||
| Republican | Biggs, Andy | 2,883 |
| Jones, Christine | 2,748 | |
| Olson, Justin | 2,493 | |
| Stapley, Don | 2,485 | |
| Democrat | Fuentes, Talia | 1,371 |
| U.S. Representative in Congress – District 6 | ||
| Republican | Schweikert, David | 1,951 |
| Wittenberg, Russ | 2,007 | |
| Democrat | Williamson, W. John | 1,937 |
| Sinuk, Brian | 1,509 | |
| Sutton, Aaron | 1,308 |
| U.S. Representative in Congress – District 7 | ||
| Republican | Nunez, Eve | 1,383 |
| Democrat | Gallego, Ruben | 2,270 |
| Ortega, Gustavo | 1,063 |
| U.S. Representative in Congress – District 8 | ||
| Republican | Franks, Trent | 3,424 |
| Van Steenwyk, Clair | 3,999 |
| U.S. Representative in Congress – District 9 | ||
| Republican | Giles, Dave | 1,972 |
| Agra, John | 2,297 | |
| Democrat | Sinema, Kyrsten | 1,457 |