Seneca, IL politics & representatives
Seneca is represented in Congress by Senators Richard J. Durbin and Tammy Duckworth and Representative Bill Foster. J. B. Pritzker is governor.
Who represents Seneca in Washington and in Illinois, with how to reach each office.
How Seneca voted in 2024
Official results for Seneca's own voters.
President 1,737 votes
McHenry County: Trump 51.3%, Harris 46.1% · Illinois: Harris 54.4%, Trump 43.5%
U.S. House · Illinois's 11th District 360,293 votes
Whole-district result
Source: MIT Election Data + Science Lab, official 2024 precinct returns (statewide totals from its official state files). Percentages are of votes for candidates; blank and spoiled ballots aren't counted.
Who represents Seneca in Congress
U.S. Senate Both senators represent all of Illinois
U.S. House · Illinois's 11th District
Who represents Seneca in state government
State Senate · District 35 Covers about 66% of Seneca
State Senate · District 32 Covers about 34% of Seneca
State House · District 69 Covers about 66% of Seneca
State House · District 63 Covers about 34% of Seneca
Seneca is split between state legislative districts. Find yours by address ↗
Seneca's own government: Town Hall →
Sources: congressional and state legislative districts from the U.S. Census Bureau (119th Congress, 2024 state districts); members of Congress from the congress-legislators project (portraits public domain); governors and state legislators from Open States. Districts are matched to Seneca by land area, so if the town is split, your street decides which one is yours.