Mountain Ranch leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 54% of adults in Mountain Ranch typically vote, below the U.S. average of about 62%. Among adults in Mountain Ranch, ~22% vote Democratic, ~32% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How Mountain Ranch compares
Among cities within 25 miles, Mountain Ranch leans more Republican than 13 of 57 neighbors.
Mountain Ranch runs about 38 points more Republican than California as a whole. California leans Democratic overall, while Mountain Ranch is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Mountain Ranch. The northeast side is the most Republican-leaning (R+29) and the west side is the least Republican-leaning (R+13), a spread of about 16 points.
Why Mountain Ranch 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 Mountain Ranch, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in Mountain Ranch live in densely developed areas, about 53 points below the California average of 58%. Mountain Ranch runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; Mountain Ranch, CA sits in the bottom quarter nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Mountain Ranch looks the way it does
Turnout in Mountain Ranch sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sheep Ranch, CA R+18
- Rail Road Flat, CA R+30
- Glencoe, CA R+27
- Mokelumne Hill, CA R+32
- San Andreas, CA R+26
- Murphys, CA R+7
- Avery, CA R+8
- Hathaway Pines, CA R+10
- Wilseyville, CA R+26
- Douglas Flat, CA R+9
Cities with Similar Populations
- Percy, IL R+50
- St. Marys City, MD R+4
- Lebo, KS R+60
- Lerna, IL R+56
- Hiram, TX R+59
- Lewisville, AR R+23
- Ripley, MD D+35
- Lemmon, SD R+61
- Riviera, TX R+26
- Bloomdale, OH R+49
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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.