Alpine leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 72% of adults in Alpine typically vote, above the U.S. average of about 62%. Among adults in Alpine, ~25% vote Democratic, ~47% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Alpine compares
Among cities within 25 miles, Alpine leans more Republican than 25 of 35 neighbors.
Alpine runs about 50 points more Republican than California as a whole. California leans Democratic overall, while Alpine is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Alpine. The east side is the most Republican-leaning (R+42) and the south side is the least Republican-leaning (R+27), a spread of about 15 points.
Why Alpine 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 Alpine, not a ranked or complete list of what matters most.
Alpine votes against the grain of California. California leans Democratic overall, while Alpine runs about 50 points more Republican. Dense places usually vote Democratic, but Alpine runs against that pattern.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Alpine, CA 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 Alpine looks the way it does
Turnout in Alpine 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
- Flinn Springs, CA R+37
- Alpine Heights, CA R+44
- Descanso, CA R+34
- Morena, CA R+33
- Lakeside, CA R+23
- Jamul, CA R+34
- El Cajon, CA R+11
- Bostonia, CA R+8
- Rancho San Diego, CA R+18
- Guatay, CA R+33
Cities with Similar Populations
- East Hemet, CA R+12
- Olivehurst, CA R+11
- Five Corners, WA Even
- Beaufort, SC R+2
- Temperance, MI R+27
- Mill Creek, WA D+25
- Lino Lakes, MN R+9
- New River, AZ R+44
- Buffalo, MN R+26
- Hercules, CA D+46
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.