The 2006 Arizona gubernatorial election was held on November 7, 2006. Incumbent Governor Janet Napolitano was reelected in a landslide. Napolitano's widespread popularity contributed to her easy reelection; her general approval rating in October 2006, one month before the election, was at 58%. This was the last time until 2022 that a Democrat was elected governor of Arizona. It is also the last time that a Democrat swept every county in the state in a statewide election.

Democratic primary

Candidates

Results

Republican primary

Candidates

Results

[[File:2006 Arizona Republican Gubernatorial primary county map.svg|thumb|200px|Primary results by county: {{legend|#d60f0f|Munsil}} {{legend|#a70808|61–70%}} {{legend|#d60f0f|51–60%}} {{legend|#ff0000|41–50%}} {{legend|#ffff00|Goldwater}} {{legend|#ffff00|51–60%}} {{legend|#f2f26c|41–50%}} ]]

Libertarian primary

Candidates

Results

General election

Predictions

Polling

Results

Results by county

Counties that flipped from Republican to Democratic