2008 Arizona House of Representatives election
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| All 60 seats in the Arizona House 31 seats needed for a majority | |||||||||||||||||||||||||
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| Results: Democratic hold Democratic gain Republican hold Republican gain | |||||||||||||||||||||||||
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| Elections in Arizona | 
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The 2008 Arizona House of Representatives election took place on Tuesday, November 4, 2008, with the primary election held on Tuesday, September 2, 2008. Arizona voters elected all 60 members of the Arizona House of Representatives in multi-member districts to serve two-year terms.
The election coincided with United States national elections and Arizona state elections, including U.S. President, U.S. House, and Arizona Senate.
Following the previous election in 2006, Republicans held a 33-to-27-seat majority over Democrats. Republicans expanded their majority in 2008, winning 35 seats. At 25 members, Democrats experienced a net loss of two seats. The newly elected members served in the 49th Arizona State Legislature, during which Republican Kirk Adams was elected as Speaker of the Arizona House.