Mount Signal leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 71% of adults in Mount Signal typically vote, above the U.S. average of about 62%. Among adults in Mount Signal, ~31% vote Democratic, ~40% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Mount Signal compares
Among cities within 25 miles, Mount Signal leans more Republican than 4 of 12 neighbors.
Mount Signal runs about 32 points more Republican than California as a whole. California leans Democratic overall, while Mount Signal is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Mount Signal. The north side is the most Republican-leaning (R+26) and the east side is the least Republican-leaning (R+9), a spread of about 16 points.
Why Mount Signal 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 Mount Signal, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 99% of residents in Mount Signal drive to work alone, about 25 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and Mount Signal sits in the bottom quarter (about 1%, in the bottom fraction of cities). Mount Signal runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Mount Signal, CA sits in the bottom tenth nationally on this measure.
Why turnout in Mount Signal looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Mount Signal is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Meloland, CA R+12
- Heber, CA D+5
- El Centro, CA D+6
- Calexico, CA D+12
- Seeley, CA R+31
- Imperial, CA R+12
- Holtville, CA R+12
- Date City, CA R+33
- Ocotillo, CA R+43
Cities with Similar Populations
- Fentress McMahan, KY R+61
- St. Stephens, NE R+69
- Indian Point, ME D+36
- Morrison Heights, NY R+24
- Weldon Spring Heights, MO R+31
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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.