PolitiFinder

1866 Illinois U.S. House District 4 Election

Illinois · 2 candidates · See every 1866 U.S. House race

Who won the 1866 Illinois U.S. House District 4 Election?

Abner Harding won the 1866 Illinois U.S. House District 4 Election. Abner Harding received 15,952 popular votes (54.36%). The main challenger was Theodore S Thompson (45.64%).

See the full head-to-head between Harding and Thompson

Harding +8.7 pts · won by 2,561 votes
Abner HardingRepublicanWINNER54.36%
15,952 votes
Theodore S ThompsonDemocratic45.64%
13,391 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.