2018 general · November 6, 2018
2018 Arizona U.S. House election results, district by district
Arizona's U.S. House races in the 2018 general election: winners, margins, unopposed seats and seats that changed party.
Races9
Changed party1
Unopposed0%0 races
Every district
D 5 · R 4
| Race | Winner | Won by | Notes |
|---|---|---|---|
| AZ-1 | Tom O’Halleran (D) | 7.7 | |
| AZ-2 | Ann Kirkpatrick (D) | 9.5 | Flipped |
| AZ-3 | Raúl M. Grijalva (D) | 27.7 | |
| AZ-4 | Paul Gosar (R) | 37.6 | |
| AZ-5 | Andy Biggs (R) | 18.8 | |
| AZ-6 | David Schweikert (R) | 10.4 | |
| AZ-7 | Ruben Gallego (D) | 70.7 | |
| AZ-8 | Debbie Lesko (R) | 10.9 | |
| AZ-9 | Greg Stanton (D) | 22.1 |
Arizona
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab