The 1972 Arizona Senate election was held on November 7, 1972. 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 12, 1972.

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, and their majority with 18 Republicans to 12 Democrats remained unchanged.

The newly elected senators served in the 31st Arizona State Legislature.

Retiring incumbents Democrats District 2: Thomas M. "Tommy" Knoles Jr. District 4: John W. McLaughlin District 6: E. B. "Blodie" Thode District 9: James F. McNulty Jr. District 10: Joe Castillo

Republicans District 3: Roy Palmer District 17: Ray A. Goetze District 21: John B. Conlan

Incumbents defeated in primary elections Democrats District 11: F. T. "Limie" Gibbings District 23: Cloves C. Campbell

Republican District 21: Joe Shaughnessy Jr.

Summary of results by Arizona state legislative district District Incumbent Party Elected senator Outcome 1st Boyd Tenney Rep Boyd Tenney Rep Hold 2nd Thomas M. "Tommy" Knoles Jr. Dem Tony Gabaldon Dem Hold 3rd Roy Palmer Rep Arthur J. Hubbard, Sr.Dem Gain 4th John W. McLaughlin Dem A.V. "Bill" Hardt Dem Hold 5th Harold C. Giss Dem Harold C. Giss Dem Hold 6th E. B. "Blodie" Thode Dem Bob Stump Dem Hold 7th A. V. "Bill" Hardt Dem William L. Swink Dem Hold 8th Charles A. Awalt Dem Charles A. Awalt Dem Hold 9th James F. McNulty Jr. Dem John C. Scott Ulm Dem Hold 10th Joe Castillo Dem Sam Lena Dem Hold 11th F. T. "Limie" Gibbings Dem Frank J. Felix Dem Hold 12th Sam Lena Dem Douglas S. HolsclawRep Gain 13th Douglas S. Holsclaw Rep Scott Alexander Rep Hold 14th Scott Alexander Rep William C. Jacquin Rep Hold 15th William C. Jacquin Rep S.H. "Hal" Runyan Rep Hold 16th Fred Koory Jr. Rep Bob Strother Rep Hold 17th Ray A. Goetze Rep Fred Koory Jr. Rep Hold 18th Joe Shaughnessy Jr. Rep Leo Corbet Rep Hold 19th Ray Rottas Rep Ray Rottas Rep Hold 20th Sandra Day O'Connor Rep Bess Stinson Rep Hold 21st John B. Conlan Rep Howard S. Baldwin Rep Hold 22nd Bess Stinson Rep Manuel "Lito" PeñaDem Gain 23rd Leo Corbet Rep Alfredo GutierrezDem Gain 24th Howard S. Baldwin Rep Sandra Day O'Connor Rep Hold 25th Trudy Camping Rep Trudy Camping Rep Hold 26th David B. Kret Rep John Roeder Rep Hold 27th Bob Stump Dem James A. (Jim) MackRep Gain 28th Cloves C. Campbell Dem David B. KretRep Gain 29th James A. (Jim) Mack Rep D. Delos Ellsworth Rep Hold 30th D. Delos Ellsworth Rep Stan Turley Rep Hold

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__NOTOC__

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