Gibson Island leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 75% of adults in Gibson Island typically vote, above the U.S. average of about 62%. Among adults in Gibson Island, ~26% vote Democratic, ~49% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Gibson Island compares
Among cities within 25 miles, Gibson Island leans more Republican than 119 of 127 neighbors.
Gibson Island runs about 59 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while Gibson Island is one of the few Republican-leaning pockets.
Why Gibson Island 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 Gibson Island, not a ranked or complete list of what matters most.
Gibson Island votes against the grain of Maryland. Maryland leans Democratic overall, while Gibson Island runs about 59 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Gibson Island, MD sits in the top quarter nationally 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 Gibson Island looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Gibson Island 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and more than 99% of households in Gibson Island own their home, compared to around 84% in nearby cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Cape St. Claire, MD D+9
- Arnold, MD D+10
- Lake Shore, MD R+24
- Pasadena, MD R+12
- Severna Park, MD D+12
- Riviera Beach, MD R+20
- Annapolis, MD D+34
- Fort Howard, MD R+27
- Crownsville, MD Even
- Parole, MD D+30
Cities with Similar Populations
- Canada Creek Ranch, MI R+43
- Bellwood, AL R+66
- Spokane, LA R+77
- Bohannon, VA R+30
- Fourseam, KY R+64
- Lundy, FL R+63
- Hainesburg, NJ R+34
- Omega, IL R+70
- Westphalia, TX R+67
- Roxbury, PA R+71
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.