St. Clair County, IL — Elections & Voting
Presidential election results and party lean trends
Election Overview
Source: St. Clair County (2024)2024 Winner
Democrat
Dem Votes
63,433
53.0%
GOP Votes
54,021
45.1%
Total Votes
119,655
Margin
D+7.9%
Shift from 2020
R+0.9pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
D+7.9%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 63,433 | 54,021 | 119,655 | 53.0% | 45.1% | D+7.9 |
| 2020 | 68,325 | 57,150 | 128,104 | 53.3% | 44.6% | D+8.7 |
| 2016 | 60,180 | 53,479 | 119,201 | 50.5% | 44.9% | D+5.6 |
In the 2024 presidential election, St. Clair County recorded 119,655 total votes. Democrats won the county with 53.0% of the vote compared to 45.1% for Republicans, a margin of D+7.9%. Compared to 2020, the margin shifted R+0.9pp from the previous election. Since 2016, St. Clair County has shifted 2.2 percentage points toward Democrats.