The 1938 United States Senate elections in Arizona took place on November 3, 1938. Incumbent Democratic U.S. Senator Carl Hayden ran for reelection to a third term, defeating Republican nominee Burt H. Clingan in the general election.
In contrast to previous elections, Hayden was easily reelected, receiving only token opposition from a relatively unknown Republican challenger.
- Carl T. Hayden, incumbent U.S. Senator
- Robert E. Miller
- Whit I. Hughes
|Democratic||Carl T. Hayden||68,328||65.48%|
|Democratic||Robert E. Miller||22,154||21.23%|
|Democratic||Whit I. Hughes||13,867||13.29%|
- Burt H. Clingan, chairman of the Arizona Industrial Commission
|Democratic||Carl T. Hayden||82,714||76.52%|
|Republican||Burt H. Clingan||25,378||23.48%|
|Democratic gain from Republican||Swing|