Winchester leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 41% of adults in Winchester typically vote, below the U.S. average of about 62%. Among adults in Winchester, ~16% vote Democratic, ~25% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How Winchester compares
Among cities within 25 miles, Winchester leans more Republican than 28 of 43 neighbors.
Winchester runs about 42 points more Republican than California as a whole. California leans Democratic overall, while Winchester is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Winchester. The southeast side is the most Republican-leaning (R+39) and the southwest side is the least Republican-leaning (R+15), a spread of about 24 points.
Why Winchester 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 Winchester, not a ranked or complete list of what matters most.
Winchester votes Republican even though it is densely developed (about 46%, modestly below the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 86% of households in Winchester are family households, above 97% of cities. Winchester runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as Winchester, CA does.
Why turnout in Winchester looks the way it does
Crowded housing lines up with lower turnout. About 6% of homes in Winchester have more than one occupant per room, above 92% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- French Valley, CA R+17
- Menifee, CA R+14
- Murrieta, CA R+14
- Homeland, CA R+18
- Sun City, CA R+15
- Wildomar, CA R+22
- Hemet, CA R+5
- Temecula, CA R+11
- Canyon Lake, CA R+24
- Juniper Springs, CA R+34
Cities with Similar Populations
- Filer, ID R+58
- Crossville, AL R+68
- Perry Heights, OH R+19
- Litchfield, MN R+34
- Seward, NE R+44
- East Alton, IL R+20
- Kingsland, TX R+50
- Wynantskill, NY R+6
- Bowie, TX R+68
- Chesapeake Beach, MD R+5
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from California Secretary of State, 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.