The 2004 Arizona Senate election was held on November 2, 2004. 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 7, 2004.

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

Following the election, Republicans maintained control of the chamber with 18 Republicans to 12 Democrats, a net gain of one seat for Republicans.

The newly elected senators served in the 47th Arizona State Legislature.

Retiring Incumbents Democrats District 5: Jack A. Brown District 23: Pete Rios Republicans District 3: Linda Binder District 10: Jim Weiers District 18: Mark Anderson

Incumbent Defeated in Primary Election Republican District 20: Slade Mead

Predictions SourceRankingAs of Rothenberg | October 1, 2004

Summary of Results by Arizona State Legislative District District Incumbent Party Elected Senator Outcome 1st Ken Bennett Rep Ken Bennett Rep Hold 2nd Albert Hale Dem Albert Hale Dem Hold 3rd Linda Binder Rep Ron Gould Rep Hold 4th Jack W. Harper Rep Jack W. Harper Rep Hold 5th Jack A. Brown Dem Jake FlakeRep Gain 6th Dean Martin Rep Dean Martin Rep Hold 7th Jim Waring Rep Jim Waring Rep Hold 8th Carolyn S. Allen Rep Carolyn S. Allen Rep Hold 9th Robert "Bob" Burns Rep Robert "Bob" Burns Rep Hold 10th Jim Weiers Rep Linda Gray Rep Hold 11th Barbara Leff Rep Barbara Leff Rep Hold 12th Robert Blendu Rep Robert Blendu Rep Hold 13th Richard Miranda Dem Richard Miranda Dem Hold 14th Bill Brotherton Dem Bill Brotherton Dem Hold 15th Ken Cheuvront Dem Ken Cheuvront Dem Hold 16th Linda Aguirre Dem Linda Aguirre Dem Hold 17th Harry Mitchell Dem Harry Mitchell Dem Hold 18th Mark Anderson Rep Karen Johnson Rep Hold 19th Marilyn Jarrett Rep Marilyn Jarrett Rep Hold 20th Slade Mead Rep John Huppenthal Rep Hold 21st Jay Tibshraeny Rep Jay Tibshraeny Rep Hold 22nd Thayer Verschoor Rep Thayer Verschoor Rep Hold 23rd Pete Rios Dem Rebecca Rios Dem Hold 24th Robert Cannell Dem Robert Cannell Dem Hold 25th Marsha Arzberger Dem Marsha Arzberger Dem Hold 26th Toni Hellon Rep Toni Hellon Rep Hold 27th Jorge Luis Garcia Dem Jorge Luis Garcia Dem Hold 28th Gabrielle Giffords Dem Gabrielle Giffords Dem Hold 29th Victor Soltero Dem Victor Soltero Dem Hold 30th Tim Bee Rep Tim Bee 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