The 1986 Arizona Senate election was held on November 4, 1986. Voters elected members of the Arizona Senate in all 30 of the state's legislative districts to serve a two-year term. Primary elections were held on September 9, 1986.[3]
Prior to the elections, the Republicans held a majority of 18 seats over the Democrats' 12 seats.
Following the election, Republicans maintained control of the chamber with 19 Republicans to 11 Democrats, a net gain of one seat for Republicans.[4]
