Rainbow leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 40% of adults in Rainbow typically vote, below the U.S. average of about 62%. Among adults in Rainbow, ~16% vote Democratic, ~24% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.
How Rainbow compares
Among cities within 25 miles, Rainbow leans more Republican than 22 of 32 neighbors.
Rainbow runs about 43 points more Republican than California as a whole. California leans Democratic overall, while Rainbow is one of the few Republican-leaning pockets.
Why Rainbow 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 Rainbow, not a ranked or complete list of what matters most.
Rainbow votes against the grain of California. California leans Democratic overall, while Rainbow runs about 43 points more Republican. A high family-household share predicts Republican voting, and about 81% of households in Rainbow are family households, above 91% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Rainbow, CA sits in the top quarter nationally on this measure.
Why turnout in Rainbow looks the way it does
Crowded housing lines up with lower turnout. About 4% of homes in Rainbow have more than one occupant per room, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Pala, CA R+20
- Fallbrook, CA R+8
- Temecula, CA R+11
- Bonsall, CA R+15
- Camp Pendleton North, CA R+25
- Valley Center, CA R+25
- Pauma Valley, CA R+26
- Murrieta, CA R+14
- Chappo, CA R+25
- Radec, CA R+41
Cities with Similar Populations
- Blaine, TN R+70
- O'Brien, FL R+70
- Mulberry, AR R+65
- St. Croix Falls, WI R+33
- Ely, MN D+12
- Mancos, CO R+3
- North Liberty, IN R+38
- Hominy, OK R+50
- Parker, FL R+27
- Woodlawn, TN R+62
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.