The 1970 Arizona Senate election was held on November 3, 1970. Voters elected all 30 members of the Arizona Senate to serve two-year terms. The 1970 election ushered in the restructuring of the Arizona Legislature to its current format. There are 30 electoral districts across the state, each district electing a single state senator and two state representatives.
Primary elections were held on September 8, 1970.[3]
Prior to the elections, the Republicans held a majority of 17 seats over the 13 seats held by Democrats.
Following the election, Republicans maintained control of the chamber and expanded their majority to 18 Republicans to 12 Democrats, a net gain of one seat for Republicans.[4]
^ abcdThe Maricopa County Board of Supervisors appointed Sandra Day O'Connor to fill the unexpired term of Isabel Burgess, who resigned. O'Connor was administered the oath of office on October 30, 1969.[5]
^ abcdThe Maricopa County Board of Supervisors appointed Howard S. Baldwin to fill the unexpired term of Orme Lewis Jr., who resigned. Baldwin was administered the oath of office on May 5, 1969.[6]
