1970 Arizona Senate election

1970 Arizona Senate election

November 3, 1970

All 30 seats of the Arizona Senate
16 seats needed for a majority
  Majority party Minority party
 
Party Republican Democratic
Seats before 17 13
Seats after 18 12
Seat change 1 1

Senate President before election

William S. (Bill) Porter
Republican

Elected Senate President

William C. Jacquin
Republican

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.

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.

The newly elected senators served in the 30th Arizona State Legislature.