Dorchester County leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 70% of adults in Dorchester County typically vote, above the U.S. average of about 62%. Among adults in Dorchester County, ~32% vote Democratic, ~38% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Dorchester County compares
Among counties within 50 miles, Dorchester County leans more Republican than 6 of 12 neighbors.
Dorchester County runs about 38 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while Dorchester County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Dorchester County. The west side runs the most Democratic (D+29) and the south side runs the most Republican (R+54), a spread of about 83 points.
Why Dorchester 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 Dorchester County, not a ranked or complete list of what matters most.
Dorchester County votes against the grain of Maryland. Maryland leans Democratic overall, while Dorchester County runs about 38 points more Republican.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Dorchester County, MD sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Dorchester County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Dorchester 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 57%, below 64% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Talbot County, MD Even
- Caroline County, MD R+34
- Wicomico County, MD D+6
- Calvert County, MD R+14
- Queen Anne's County, MD R+27
- Somerset County, MD Even
- St. Mary's County, MD R+12
- Sussex County, DE R+12
- Kent County, DE D+5
- Worcester County, MD R+12
Counties with Similar Populations
- Hale County, TX R+44
- Logan County, WV R+66
- Jackson County, OH R+58
- Evangeline Parish, LA R+39
- Lassen County, CA R+37
- Chester County, SC R+16
- Juneau City and Borough, AK D+22
- Jefferson Davis Parish, LA R+60
- Henry County, TN R+55
- Rhea County, TN R+63
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.