Charles County, MD Political Map | Democrat & Republican Areas in Charles County

By the BestNeighborhood data science team. Last updated May 2026.

Charles County leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.

 

About 78% of adults in Charles County typically vote, above the U.S. average of about 62%. Among adults in Charles County, ~54% vote Democratic, ~24% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.

How Charles County compares

Among counties within 50 miles, Charles County leans more Democratic than 19 of 26 neighbors.

Charles County runs about 9 points more Democratic than Maryland as a whole.

Politics vary noticeably by city within Charles County. The north side runs the most Democratic (D+64) and the southeast side runs the most Republican (R+28), a spread of about 92 points.

Why Charles County leans the way it does

This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Charles County, not a ranked or complete list of what matters most.

Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Charles County is about 33%, about 40 points below the U.S. average of 72%. High college attainment predicts Democratic voting, and Charles County sits in the top quarter (about 33%, above 83% of counties). A high never-married share predicts Democratic voting, and about 34% of adults in Charles County have never been married, above 80% of counties.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Charles County, MD sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Charles County looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Charles County is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 63%, above 69% of counties. Homeowners vote more often than renters, and about 83% of households in Charles County own their home, compared to around 64% in nearby counties. High high-school completion lines up with higher turnout, and about 95% of adults in Charles County have completed high school, above 89% of counties. Learn more about the findings and methodology on the political spectrum map.

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Sources and methodology

Precinct-level voting records used to fit the model come from Maryland State Board of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.

Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.