St. Charles County, MO — Elections & Voting
Presidential election results and party lean trends
Election Overview
Source: St. Charles County (2024)2024 Winner
Republican
Dem Votes
92,226
40.8%
GOP Votes
130,588
57.8%
Total Votes
226,052
Margin
R+17.0%
Shift from 2020
D+0.5pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
R+17.0%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 92,226 | 130,588 | 226,052 | 40.8% | 57.8% | R+17.0 |
| 2020 | 89,530 | 128,389 | 222,017 | 40.3% | 57.8% | R+17.5 |
| 2016 | 68,225 | 120,899 | 199,513 | 34.2% | 60.6% | R+26.4 |
In the 2024 presidential election, St. Charles County recorded 226,052 total votes. Republicans won the county with 57.8% of the vote compared to 40.8% for Democrats, a margin of R+17.0%. Compared to 2020, the margin shifted D+0.5pp from the previous election. Since 2016, St. Charles County has shifted 9.4 percentage points toward Democrats.