The 1934 Illinois Senate election was held on November 6, 1934, to determine which party would control the Illinois Senate for the following two years in the 59th Illinois General Assembly. The 26 odd-numbered seats out of the 51 seats in the Illinois Senate were up for election alongside a special election to fill the vacancy left in District 40 following the death of incumbent democratic state senator Clifford J. Vogelsang on May 8, 1933. The primary was held on April 10, 1934. Prior to the election, 33 seats were held by Democrats and 18 seats were held by Republicans. The general election saw Democrats expanding their majority in the State Senate by 2 seats.
Retirements Democrats District 29: Edward P. O'Grady retired. District 49: E. P. Kline retired.
Republicans District 7: Arthur A. Huebsch retired. District 33: Martin R. Carlson retired. District 35: Harry G. Wright retired. District 51: Charles H. Thompson retired.
Incumbents defeated In primary Democrats District 23: William F. Gillmeister lost renomination to Thomas E. Keane.
Republicans District 3: Adelbert H. Roberts lost renomination to William E. King.
In general Republicans District 5: Roy C. Woods lost re-election to Thomas Vernor Smith.
Closest races Seats where the margin of victory was under 10%:
(gain) (gain)
Results District 1
District 3
District 5
District 7
District 9
District 11
District 13
District 15
District 17
District 19
District 21
District 23
District 25
District 27
District 29
District 31
District 33
District 35
District 37
District 39
District 40 (Special)
District 41
District 43
District 45
District 47
District 49
District 51
Notes
References