Alleghany, CA Political Map | Democrat & Republican Areas in Alleghany

By the BestNeighborhood data science team. Last updated May 2026.

Alleghany leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.

 

About 67% of adults in Alleghany typically vote, near the U.S. average of about 62%. Among adults in Alleghany, ~31% vote Democratic, ~36% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.

How Alleghany compares

Among cities within 25 miles, Alleghany leans more Republican than 9 of 38 neighbors.

Alleghany runs about 26 points more Republican than California as a whole. California leans Democratic overall, while Alleghany is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Alleghany. The southeast side runs the most Democratic (D+6) and the west side runs the most Republican (R+8), a spread of about 14 points.

Why Alleghany 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 Alleghany, not a ranked or complete list of what matters most.

Alleghany votes against the grain of California. California leans Democratic overall, while Alleghany runs about 26 points more Republican. Rural areas vote Republican, and Alleghany sits in the bottom quarter on density (about 4%, below 89% of cities).

Paved land cover and Republican lean

Places with little paved surface tend to lean Republican; Alleghany, CA sits in the bottom 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 Alleghany looks the way it does

Turnout in Alleghany 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.

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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.