The 1934 Wisconsin Senate election was held on Tuesday, November 6, 1934. Seventeen of the 33 seats in the Wisconsin State Senate were up for election—the odd-numbered districts. Prior to the election 22 seats were held by Republicans, 9 were held by Democrats, one seat was held by a Socialist, and one seat was vacant.
The primary election was held on September 18, 1934.
There was one special election scheduled in 1934 for the Wisconsin state Senate.
Incumbent Republican John E. Cashman ran for re-election as a Progressive. He defeated Democrat Ray J. Scheuer and Republican Alvin O'Konski in the general election.
Incumbent Socialist Walter Polakowski was moved into the 7th district due to redistricting, leaving this district open. Democrat Arthur L. Zimny defeated Socialist George L. Tews, Progressive H. C. Schultz, Independent Carl Lester, and Republican William B. Manning.
Incumbent Republican Bernhard Gettelman ran for re-election. He was defeated by Democrat Harold V. Schoenecker.
Incumbent Republican Leonard Fons declined to seek re-election, leaving the district open. Democrat Max Galasinski defeated Socialist Walter Polakowski â who had been moved into this district due to redistricting â as well as Progressive Edwarf R. Buer and Republican Herbert W. Koch.
Incumbent Republican Irving P. Mehigan ran for re-election. He was defeated by Democrat James L. Callan.
Incumbent Republican Philip Nelson ran for re-election. He defeated Progressive Albert N. Young, Democrat Laverne A. Sutfin, and Socialist Carrol T. Hodsdon.
Incumbent Democrat Eugene A. Clifford declined to seek re-election, instead unsuccessfully running for Congress from Wisconsin's 8th congressional district. Progressive Frank E. Panzer defeated Democrat Paul A. Hemmy Jr., Republican Jesse M. Peters, and Socialist Alfred A. Naber.
Incumbent Democrat Alexander Paul ran for re-election. He was defeated by Republican Maurice Coakley.
Incumbent Republican George Engebretson ran for re-election as a Progressive. He defeated Republican Floyd E. Olson and Democrat Leland C. White.
Incumbent Republican Merritt F. White died on July 28, 1934, leaving the district open. Democrat Pierce A. Morrissey defeated Republican Norton J. Williams and Progressive Charles P. Potratz.
Incumbent Republican Walter S. Goodland declined to seek re-election, leaving the district open. Democrat Joseph Clancy defeated Republican Thorwald M. Beck, Progressive Peden Back, and Socialist Lars P. Christiansen.
Incumbent Republican Herman J. Severson ran for re-election as a Progressive. He defeated Democrat Michael J. Mersch and Republican John S. Hensel.
Incumbent Republican Otto Mueller ran for re-election. He was defeated by Progressive Roland E. Kannenberg.
Incumbent Republican Fred W. Zantow ran for re-election as a Progressive. He defeated Republican Harry Pauls and Democrat Isaac C. Evans.
Republican John A. Anderson ran for re-election as a Progressive. He defeated Republican Herschel Shipley, Democrat Joseph H. Wallis, and Socialist Olaf A. Bloom.
Republican Orland S. Loomis declined to seek re-election, instead unsuccessfully running for Wisconsin Attorney General as a Progressive, leaving this district open. Progressive J. Earl Leverich defeated Republican Kevin J. Callahan, Democrat Timothy P. Donovan, and Socialist Glen C. Felker.
Incumbent Republican William Edwards declined to seek re-election, leaving this seat open. Democrat Chester Dempsey defeated Republican Evan G. Davies and Progressive John C. Schumann.