PolitiFinder

1966 Illinois U.S. House District 18 Election

Illinois · 2 candidates · See every 1966 U.S. House race

Who won the 1966 Illinois U.S. House District 18 Election?

Robert H. Michel won the 1966 Illinois U.S. House District 18 Election. Robert H. Michel received 80,293 popular votes (58.44%). The main challenger was Thomas Cassidy V (41.56%).

See the full head-to-head between Michel and V

Michel +16.9 pts · won by 23,193 votes
Robert H. MichelRepublicanWINNER58.44%
80,293 votes
Thomas Cassidy VDemocratic41.56%
57,100 votes
Popular-vote totals for this U.S. House election come from the Constituency-Level Elections Archive (CLEA) and the official public record.

Data last verified July 28, 2026.