1820 United States House of Representatives election in Illinois

Illinois elected its member August 7, 1820.

District Incumbent This race
Member Party First elected Results Candidates
Illinois at-large Daniel P. Cook Democratic-Republican 1819 Incumbent re-elected. Daniel P. Cook (Democratic-Republican) 64.7%
Elias Kane 35.2%
John McLean (Democratic-Republican) 0.1%

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