It is currently represented by RepublicanAndy Biggs, who was elected in November 2016.
After redistricting in 2010, most of the 5th's territory became the 9th district, while the 5th included most of the territory in the old 6th district.
History
Arizona picked up a fifth district after the 1980 Census. It covered most of the southeastern portion of the state, though the bulk of its population was located in the eastern half of Tucson. It was a Republican-leaning swing district, though a Democrat won it when it was first contested in 1982 before giving way to a Republican in 1984.
After the 2000 census, this district essentially became the 8th district, while most of the Maricopa County portion of the old 6th district became the new 5th district. This version of the 5th covered all of Tempe and Scottsdale and portions of Chandler, Mesa and the Ahwatukee section of Phoenix. Although Republicans outnumbered Democrats by about 40,000 voters, the 5th district was considered far less conservative than other suburban Phoenix districts. George W. Bush received 54% of the vote in this district in 2004 and home state candidate John McCain narrowly won the district in 2008 with 51.70% of the vote while Barack Obama received 47.17%.
After the 2010 census, this district mostly became the 9th district, while the 5th was reconfigured to take in most of the East Valley. This area had previously been the 1st district from 1951 to 2003 and the 6th district from 2003 to 2013. Like its predecessors, this district is heavily Republican.