St. Clair County voter turnout
How many people does one vote speak for in St. Clair County, Illinois?
Only 46% of eligible citizens in St. Clair County voted in the 2022 midterm.
2024 presidential: 62% turnout · 1.6 people per vote
Turnout in St. Clair County
In the November 2022 midterm, 88,788 of St. Clair County’s 191,810 eligible citizens voted: 46.3% turnout. That’s 1.2 points higher than Illinois overall (45.1%) and about the same as the national rate (46.0%). With 103,022 eligible citizens sitting it out, each ballot cast spoke for 2.2 people.
In the 2024 presidential election, turnout was 62.5%, so each ballot spoke for 1.6 people. Midterm turnout here ran 16.2 points below the presidential year, which is why every vote in a midterm like 2026 carries extra weight.
St. Clair County ranks #28 of 102 counties in Illinois for vote power (#1 has the lowest turnout, so each vote there counts for the most people).
Election Day is Tuesday, November 3, 2026 — register or check your status at vote.org.
| County | Rank | Turnout | Per vote |
|---|---|---|---|
| Knox County | #25 | 46.1% | 2.2 |
| Marion County | #26 | 46.1% | 2.2 |
| Christian County | #27 | 46.2% | 2.2 |
| St. Clair County | #28 | 46.3% | 2.2 |
| Boone County | #29 | 46.5% | 2.2 |
| Cass County | #30 | 46.5% | 2.2 |
| Wabash County | #31 | 46.5% | 2.2 |
See all 102 Illinois counties ranked →