Arizona is divided into nine congressional districts, each represented by a member of the United States House of Representatives. Since the 2008 elections, Democrats and Republicans have alternated holding a majority of seats in the delegation in six of the last eight elections.
List of members of the United States House delegation from Arizona, district boundaries, and the district political ratings according to the CPVI. The delegation has a total of nine members, with six Republicans and three Democrats.
| District | Member (Residence) [2] | Party | Incumbent since | CPVI (2022) [3] | District map |
|---|---|---|---|---|---|
| 1st |  David Schweikert (Fountain Hills) | Republican | January 3, 2011 [4] | R+2 |  |
| 2nd |  Eli Crane (Oro Valley) | Republican | January 3, 2023 [5] | R+6 |  |
| 3rd |  Yassamin Ansari (Phoenix) | Democratic | January 3, 2025 | D+24 |  |
| 4th |  Greg Stanton (Phoenix) | Democratic | January 3, 2019 [6] | D+2 |  |
| 5th |  Andy Biggs (Gilbert) | Republican | January 3, 2017 [7] | R+11 |  |
| 6th |  Juan Ciscomani (Tucson) | Republican | January 3, 2023 [8] | R+3 |  |
| 7th |  Raúl Grijalva (Tucson) | Democratic | January 3, 2003 [9] | D+15 |  |
| 8th |  Abraham Hamadeh (Scottsdale) | Republican | January 3, 2025 | R+10 |  |
| 9th |  Paul Gosar (Bullhead City) | Republican | January 3, 2011 [10] | R+16 |  |
From 1863 to 1912, Arizona Territory sent one non-voting delegate to the House of Representatives. After its statehood in 1912, Arizona was granted one representative in the House. As the state's population has grown, Arizona's delegation has increased in size to its total of nine representatives.
| Congress | Representatives | Notes |
|---|---|---|
| 38th–62nd (1863–1912) | 1 | Non-voting delegate |
| 62nd–77th (1912–1943) | 1 | |
| 78th–80th (1943–1949) | 2 | Elected on an at-large basis |
| 81st–87th (1949–1963) | 2 | |
| 88th–92nd (1963–1973) | 3 | |
| 93rd–97th (1973–1983) | 4 | |
| 98th–102nd (1983–1993) | 5 | |
| 103rd–107th (1993–2003) | 6 | |
| 108th–112th (2003–2013) | 8 | |
| 113th– (2013–) | 9 |
Table of United States congressional district boundary maps in the State of Arizona, presented chronologically. [11] All redistricting events that took place in Arizona between 1973 and 2013 are shown.
| Year | Statewide map | Phoenix highlight |
|---|---|---|
| 1973–1982 |  |  |
| 1983–1992 |  |  |
| 1993–2002 |  |  |
| 2003–2013 |  |  |
| 2013-2023 |  |  |
Due to redistricting, the congressional district numbers in Arizona have changed for the 2022 election cycle. Through this process, the district numbers have changed the following ways:
Since Arizona became a U.S. state in 1912, it has sent congressional delegations to the United States Senate and United States House of Representatives, beginning with the 63rd United States Congress in 1913. Before becoming a state, the Arizona Territory elected a non-voting delegate at-large to Congress from 1864 to 1912. Each state elects two senators to serve for six years, and varying numbers of members of the House, depending on state population, to two-year terms. Arizona has sent nine members to the House in each delegation since the 2010 United States Census.
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Massachusetts's 5th congressional district is a congressional district in eastern Massachusetts. The district is represented by Katherine Clark of the Democratic Party. Massachusetts's congressional redistricting after the 2010 census changed the borders of the district starting with the elections of 2012, with the new 3rd district largely taking the place of the old 5th. The 5th district covers many of the communities represented in the old 7th district.
Massachusetts's 7th congressional district is a congressional district located in eastern Massachusetts, including roughly three-fourths of the city of Boston and a few of its northern and southern suburbs. The seat is currently held by Democrat Ayanna Pressley.
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