While campaign finance is not the only factor in electoral outcomes, successful fundraising can provide a candidate with advantages during a campaign. Fundraising can also indicate party momentum.

This article details the five most expensive contested general elections in the House of Representatives.

Republican primary elections for all 30 districts in the Arizona House of Representatives took place on Aug. 2, 2022. Of the 30 districts up for election in 2022, 22 had a Republican primary election with more than one candidate. The Arizona House has two seats per district.