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1988 Illinois U.S. House District 21 Election

Illinois · 2 candidates · See every 1988 U.S. House race

Who won the 1988 Illinois U.S. House District 21 Election?

Jerry F. Costello won the 1988 Illinois U.S. House District 21 Election. Jerry F. Costello received 105,836 popular votes (52.6%). The main challenger was Robert H. Gaffner (47.4%).

See the full head-to-head between Costello and Gaffner

Costello +5.2 pts · won by 10,451 votes
Jerry F. CostelloDemocraticWINNER52.6%
105,836 votes
Robert H. GaffnerRepublican47.4%
95,385 votes
Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.