Question 1

How did St. Clair, Illinois vote in the 2024 presidential election?

Accepted Answer

St. Clair, Illinois voted Democratic in 2024 with a margin of D+7.8. Kamala D Harris received 63,433 votes and Donald Trump received 54,021 out of 119,962 total votes cast, a 0.8-point shift toward Republicans from 2020.

Question 2

What is St. Clair, Illinois's political history?

Accepted Answer

St. Clair, Illinois has 40 presidential elections on record, spanning 1868 to 2024. It has voted Democratic in every presidential election since 1976. The largest single-election swing was 107.8 points in 1876.

Question 3

What are the demographics of St. Clair, Illinois?

Accepted Answer

St. Clair, Illinois has a population of 253,694 according to the 2020 Census. The racial composition is 59.1% non-Hispanic white, 5.1% Hispanic, 27.9% Black. About 32% of residents hold a bachelor's degree or higher. Median household income is $73,854.

Question 4

Which places are most similar to St. Clair, Illinois?

Accepted Answer

Based on demographic and electoral similarity analysis, the three most similar countys to St. Clair, Illinois are Peoria, Montgomery, Suffolk City. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

St. Clair County, Illinois

Current Illinois Polling

2026 Illinois Senate Democratic Primary

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