Mayo leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 95% of adults in Mayo typically vote, above the U.S. average of about 62%. Among adults in Mayo, ~43% vote Democratic, ~52% Republican, and ~5% don't vote. The map below shows estimated turnout by block group.
How Mayo compares
Among cities within 25 miles, Mayo leans more Republican than 107 of 142 neighbors.
Mayo runs about 40 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while Mayo is one of the few Republican-leaning pockets.
Why Mayo 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 Mayo, not a ranked or complete list of what matters most.
Mayo votes Republican even though it is densely developed (about 43%, about 7 points above the U.S. average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 81% of households in Mayo are family households, above 92% of cities. Mayo runs against the grain of Maryland, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Mayo, MD sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Mayo looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Mayo 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%. Homeowners vote more often than renters, and about 91% of households in Mayo own their home, about 16 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 96% of adults in Mayo have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Edgewater, MD D+4
- Annapolis Neck, MD D+27
- Highland Beach, MD D+29
- Galesville, MD R+8
- Shady Side, MD R+6
- Riva, MD D+5
- West River, MD R+14
- Annapolis, MD D+34
- Parole, MD D+30
- Harwood, MD R+11
Cities with Similar Populations
- Silver Springs, FL R+47
- Yarmouth, ME D+35
- Milliken, CO R+35
- Greenville, IL R+28
- Ladue, MO D+7
- Mecca, CA D+26
- La Junta, CO R+13
- Dagsboro, DE R+22
- Harrington, DE R+26
- Hollis, NH D+13
All Local Stats
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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.