The 1990 Arizona Senate election was held on November 6, 1990. 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 11, 1990.

Prior to the elections, the Republicans held a majority of 17 seats over the Democrats' 13 seats.

1990 Arizona Senate election

Following the election, Democrats flipped control of the chamber and took a majority of 17 Democrats to 13 Republicans, a net gain of four seats for Democrats.

1990 Arizona Senate election

The newly elected senators served in the 40th Arizona State Legislature.

1990 Arizona Senate election

Retiring Incumbents

Democrats

District 2: Tony Gabaldon

Republicans

District 12: John T. Mawhinney

District 14: William J. "Bill" DeLong

District 24: Pete Corpstein

District 28: Robert B. Usdane

Incumbents Defeated in Primary Elections

Republicans

District 1: John Hays

District 21: Jerry Gillespie

Incumbents Defeated in General Elections

Democrats

District 5: Jones Osborn

Republicans

District 9: Jeffrey J. Hill

District 16: Wayne Stump

District 18: Leo Corbet

District 25: Jacque Steiner

Summary of Results by Arizona State Legislative District

Detailed Results

District 1

District 2

District 3

District 4

District 5

District 6

District 7

District 8

District 9

District 10

District 11

District 12

District 13

District 14

District 15

District 16

District 17

District 18

District 19

District 20

District 21

District 22

District 23

District 24

District 25

District 26

District 27

District 28

District 29

District 30

References

Senate

Arizona Senate

Arizona Senate elections