Rosslyn Farms leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About more than 99% of adults in Rosslyn Farms typically vote, above the U.S. average of about 62%. Among adults in Rosslyn Farms, ~59% vote Democratic, ~42% Republican, and ~-1% don't vote. The map below shows estimated turnout by block group.
How Rosslyn Farms compares
Among cities within 25 miles, Rosslyn Farms leans more Democratic than 199 of 237 neighbors.
Rosslyn Farms runs about 18 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and Rosslyn Farms sits clearly on the Democratic side.
Why Rosslyn Farms 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 Rosslyn Farms, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 77% of adults in Rosslyn Farms hold a bachelor's degree, about 49 points above the U.S. average of 28%. Dense areas vote Democratic, and Rosslyn Farms sits in the top fifth on density (about 67%, above 91% of cities). Rosslyn Farms runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Rosslyn Farms, PA sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Rosslyn Farms looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Rosslyn Farms 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 78%, about 18 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 98% of households in Rosslyn Farms own their home, compared to around 71% in nearby cities. High high-school completion lines up with higher turnout, and more than 99% of adults in Rosslyn Farms have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Thornburg, PA D+18
- Carnegie, PA D+7
- Crafton, PA D+19
- Ingram, PA D+14
- Green Tree, PA D+10
- Heidelberg, PA D+10
- Presto, PA R+5
- Mckees Rocks, PA D+15
- Rennerdale, PA R+12
- Dormont, PA D+39
Cities with Similar Populations
- Mount Vernon Springs, NC R+36
- Big Falls, WI R+50
- Leona, PA R+63
- Rogers Mesa, CO R+54
- Wards, NC R+43
- Little Hope, PA R+44
- West Bridgton, ME R+17
- Grand Portage, MN D+28
- Farmington Falls, ME R+8
- Berkshire Heights, MA D+61
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau 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.