Jonathan L. Jackson

In the 2024 House race for IL-1, Jonathan L. Jackson (D) won with 65.8% of the vote, defeating Marcus Lewis (R) who received 34.1%. A third candidate also appeared on the ballot. Jonathan L. Jackson's 31.7-point advantage over the runner-up confirmed a comfortable win.

As the incumbent, Jonathan L. Jackson benefited from name recognition, established constituent services, and the roughly 2-3 point advantage that sitting members typically enjoy. The 2024 presidential election drove higher voter turnout, which can help or hurt down-ballot candidates depending on the top of the ticket. The wide margin suggests this district is firmly in the Democrat column for the foreseeable future.

In the 2022 House race for IL-1, Jonathan L. Jackson (D) won with 67.0% of the vote, defeating Eric Carlson (R) who received 33.0%. 2 additional candidates split the remaining vote. Jonathan L. Jackson's 34.1-point advantage over the runner-up confirmed a comfortable win.

This was an open-seat race with no incumbent running — Bobby Rush (D) previously held the seat. Open seats typically attract stronger candidates and heavier spending from both parties. As a Democrat, Jonathan L. Jackson won despite the historical midterm penalty against the president's party (Democrat Biden was in office). The wide margin suggests this district is firmly in the Democrat column for the foreseeable future.