# 2018 Arizona Attorney General election

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The 2018 Arizona Attorney General election took place on November 6, 2018, to elect the attorney general of Arizona. Incumbent Republican Mark Brnovich won re-election to a second term, defeating former Arizona Department of Health Services Director January Contreras. Primaries took place on August 28, 2018.

## Republican primary

Brnovich won the Republican primary unopposed.
Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mark Brnovich (incumbent) | 561,370 | 100.0 |
| Total votes | Total votes | Total votes | 561,370 | 100.0 |

## Democratic primary

January Contreras, former director of Arizona Department of Health Services and senior advisor to former U.S. Homeland Security Secretary Janet Napolitano, won the Democratic primary unopposed.
Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | January Contreras | 464,510 | 100.0 |
| Total votes | Total votes | Total votes | 464,510 | 100.0 |

## Libertarian primary

Michael Kielsky, former Chair of the Arizona Libertarian Party, won the Libertarian nomination as a write-in candidate.
Libertarian primary results :
| Party | Party | Candidate | Votes | % |
| | Libertarian | Michael Kielsky (write-in) | 2,156 | 100.0 |
| Total votes | Total votes | Total votes | 2,144 | 100.0 |

## General election
### Debate

One debate was hosted by Arizona PBS on October 10.
| Dates | Brnovich | Contreras | Link |
| October 10, 2018 | Participant | Participant | Full debate – AZCentral |

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Mark Brnovich (R) | January Contreras (D) | Undecided |
| OH Predictive Insights | September 5–6, 2018 | 597 | ± 4.0% | 48% | 36% | 16% |
| Data Orbital | October 1–3, 2018 | 550 | ± 4.2% | 46% | 33% | 19% |

### Results

Brnovich won the general election by a 3.47% margin of victory.
General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mark Brnovich (incumbent) | 1,201,398 | 51.73% |
| | Democratic | January Contreras | 1,120,726 | 48.26% |
| | Write-in | Write-in | 346 | 0.01% |
| Total votes | Total votes | Total votes | 2,322,470 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

#### By congressional district

Despite losing the state, Contreras won five of nine congressional districts.
| District | Brnovich | Contreras | Representative |
| 1st | 49.892% | 49.894% | Tom O'Halleran |
| 2nd | 46% | 54% | Ann Kirkpatrick |
| 3rd | 35% | 65% | Raúl Grijalva |
| 4th | 69% | 31% | Paul Gosar |
| 5th | 61% | 39% | Andy Biggs |
| 6th | 56% | 44% | David Schweikert |
| 7th | 26% | 74% | Ruben Gallego |
| 8th | 60% | 40% | Debbie Lesko |
| 9th | 42% | 58% | Greg Stanton |