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1968 Illinois U.S. Senate Election

Illinois · 4 candidates · See every 1968 U.S. Senate race

Who won the 1968 Illinois U.S. Senate Election?

Adlai Stevenson III won the 1968 Illinois U.S. Senate Election. Adlai Stevenson III received 2,065,054 popular votes (57.38%). The main challenger was Ralph Tyler Smith (42.22%).

See the full head-to-head between III and Smith

III +15.2 pts · won by 545,336 votes
Adlai Stevenson IIIDemocraticWINNER57.38%
2,065,054 votes
Ralph Tyler SmithRepublican42.22%
1,519,718 votes
Lynn HendersonSocialist Workers0.25%
8,859 votes
Louis FisherSocialist Labor0.15%
5,564 votes
Popular-vote totals for this U.S. Senate election come from the Constituency-Level Elections Archive (CLEA) and the official public record.

Data last verified July 28, 2026.