During political discussions, St Charles County is often described as a "Red" county. While it's certainly true that the county leans Republican, a sizable percentage of county residents voted for the Democratic candidate in the last three major elections.

2016
DONALD J. TRUMP 121650 64%
HILLARY RODHAM CLINTON 68626 36%
2020
DONALD J. TRUMP 128389 59%
JOSEPH R. BIDEN 89530 41%
2022
ERIC SCHMITT 73463 58%
TRUDY BUSCH VALENTINE 53303 42%

Using precinct results from the St. Charles County Election Authority , we can see recent trends

In 2016, Clinton's highest performing precinct was precinct 41 in St Charles city with 49.1% of the votes.


In 2020, Biden won a single precinct, precinct 47 in St Charles city with 50.2% of the votes. Biden also won 53.3% of the absentee vote.


The Valentine-Schmitt US Senate race in 2022 tightened the overall race by only one percentage point but increased the number of precincts won to 15.

There were also Democratic gains in the western part of the county.

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