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Election 2020 Results

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2020 US House elections in Arizona

Arizona elected 9 members of the House in 2020: Democrats won 5 seats and Republicans 4.

The closest was the 1st district, decided by 3.2 points: Tom O'Halleran (Democrat) beat Tiffany Shedd (Republican), 51.6% to 48.4%, a margin of 3.2 points and 11,760 votes.

In the House vote by county, Republicans led in 10 of the 15 counties and Democrats in 5. The largest, Maricopa, cast 1,985,609 votes and went to the Democrat by 1.2 points. The closest was Greenlee, where 846 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Every district

DistrictDemocratVotesRepublicanVotesOthersMargin
1 Tom O'Halleran188,469 (51.6%) Tiffany Shedd176,709 (48.4%) D+3.2
2 Ann Kirkpatrick209,945 (55.1%) Brandon Martin170,975 (44.9%) D+10.2
3 Raúl Grijalva174,243 (64.6%) Daniel Wood95,594 (35.4%) D+29.2
4 Delina DiSanto120,484 (30.2%) Paul Gosar278,002 (69.7%) 137 R+39.5
5 Joan Greene183,171 (41.1%) Andy Biggs262,414 (58.9%) R+17.8
6 Hiral Tipirneni199,644 (47.8%) David Schweikert217,783 (52.2%) R+4.4
7 Ruben Gallego165,452 (76.7%) Joshua Barnett50,226 (23.3%) D+53.4
8 Michael Muscato170,816 (40.4%) Debbie Lesko251,633 (59.6%) R+19.1
9 Greg Stanton217,094 (61.6%) Dave Giles135,180 (38.4%) D+23.3

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
Maricopa 1,004,699 50.6% 980,910 49.4% 1,985,609 D+1.2
Pima 297,856 58.8% 208,460 41.2% 506,316 D+17.7
Pinal 74,752 41.4% 105,841 58.6% 180,593 R+17.2
Yavapai 47,855 34.3% 91,503 65.7% 139,358 R+31.3
Mohave 23,659 23.6% 76,511 76.4% 100,170 R+52.8
Coconino 44,842 62.6% 26,800 37.4% 71,642 D+25.2
Yuma 33,016 48.5% 35,115 51.5% 68,131 R+3.1
Cochise 24,288 41.1% 34,796 58.9% 59,084 R+17.8
Navajo 24,205 47.9% 26,371 52.1% 50,576 R+4.3
Apache 23,605 68.0% 11,110 32.0% 34,715 D+36.0
Gila 9,190 33.9% 17,928 66.1% 27,118 R+32.2
Santa Cruz 13,493 70.2% 5,729 29.8% 19,222 D+40.4
Graham 4,436 30.4% 10,153 69.6% 14,589 R+39.2
La Paz 2,042 28.7% 5,063 71.3% 7,105 R+42.5
Greenlee 1,380 38.3% 2,226 61.7% 3,606 R+23.5

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Arizona in every House election we hold

YearSeatsHouse vote
2024 D 3, R 6 R+4.0
2022 D 3, R 6 R+13.2
2020 D 5, R 4 R+0.3
2018 D 5, R 4 D+1.7
2016 D 4, R 5 R+9.5
2014 D 4, R 5 R+16.3
2012 D 5, R 4 R+8.5
2010 D 3, R 5 R+11.1
2008 D 5, R 3 D+1.6
2006 D 4, R 4 R+9.6
2004 D 2, R 6 R+28.3
2002 D 2, R 6 R+17.6
2000 D 1, R 5 R+20.3
1998 D 1, R 5 R+16.6
1996 D 1, R 5 R+20.6
1994 D 1, R 5 R+22.1
1992 D 3, R 3 R+11.2
1990 D 1, R 4 R+28.6