Annapolis Junction leans heavily Democratic by roughly 44 points: about 72% of voters vote Democratic and 28% Republican.
About 78% of adults in Annapolis Junction typically vote, above the U.S. average of about 62%. Among adults in Annapolis Junction, ~56% vote Democratic, ~22% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Annapolis Junction compares
Among cities within 25 miles, Annapolis Junction leans more Democratic than 89 of 195 neighbors.
Annapolis Junction runs about 15 points more Democratic than Maryland as a whole.
Politics vary noticeably by neighborhood within Annapolis Junction. The east side is the most Democratic-leaning (D+36) and the north side is the least Democratic-leaning (D+22), a spread of about 15 points.
Why Annapolis Junction leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Annapolis Junction, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 78% of residents in Annapolis Junction live in densely developed areas, about 42 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Annapolis Junction sits in the top quarter (about 49%, above 93% of cities). A high never-married share predicts Democratic voting, and about 37% of adults in Annapolis Junction have never been married, above 90% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Annapolis Junction, MD sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Annapolis Junction looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Annapolis Junction 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 69%, about 9 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Jessup, MD D+48
- Fort Meade, MD D+40
- Savage, MD D+56
- Maryland City, MD D+55
- Hanover, MD D+38
- Scaggsville, MD D+44
- Severn, MD D+34
- Laurel, MD D+58
- Harmans, MD D+40
- Elkridge, MD D+45
Cities with Similar Populations
- Butlerville, IN R+65
- Whitehorse, NM D+24
- Stafford, KS R+60
- Newellton, LA R+42
- East Union, TN R+50
- New Summerfield, TX R+59
- LaMoure, ND R+54
- Ettrick, WI R+27
- Hartsgrove, OH R+56
- Mill Creek, IN R+45
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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.