Results of the 2020 United States House of Representatives elections in Arizona by district:[2] Tom O'Halleran Democratic Tom O'Halleran Democratic The 1st district is based in the northeastern part of the state, encompassing the Phoenix and Tucson metropolitan areas, taking in Casa Grande, Maricopa, Oro Valley, and Marana.

Labor unions Organizations Newspapers Raúl Grijalva Democratic Raúl Grijalva Democratic The 3rd district encompasses southwestern Arizona, taking in Yuma, western Tucson, as well as stretching into the western suburbs of Phoenix, including Goodyear, Avondale, southern Buckeye, and a small portion of West Phoenix.

Paul Gosar Republican Paul Gosar Republican The 4th district is located in north-central Arizona, taking in Lake Havasu City, Prescott, and the Phoenix exurbs, including San Tan Valley, Apache Junction, and northern Buckeye.

[3] David Schweikert Republican David Schweikert Republican The 6th district covers parts of the northeastern suburbs of Phoenix, containing Scottsdale, Paradise Valley, Cave Creek, Fountain Hills, as well as a portion of North Phoenix, including Deer Valley and Desert View.

[3] Organizations Organizations Federal officials State officials Labor unions Organizations Graphical summary with Generic Republican and Generic Democrat Ruben Gallego Democratic Ruben Gallego Democratic The 7th district encompasses Downtown Phoenix and western Phoenix, including the urban villages of Maryvale, Estrella, Laveen, South Mountain, Central City, Encanto, and Alhambra, as well as Tolleson and southern Glendale.

[3] Debbie Lesko Republican Debbie Lesko Republican The 8th district encompasses the western and northwestern suburbs of Phoenix, taking in Surprise, Peoria, Litchfield Park, Anthem, northern Glendale, and parts of North Phoenix, including North Gateway and Rio Vista.