Gilbert, AZ Political Map | Democrat & Republican Areas in Gilbert

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

Gilbert leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.

 

About 78% of adults in Gilbert typically vote, above the U.S. average of about 62%. Among adults in Gilbert, ~34% vote Democratic, ~44% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.

How Gilbert compares

Among cities within 25 miles, Gilbert leans more Republican than 20 of 30 neighbors.

Gilbert runs about 7 points more Republican than Arizona as a whole.

Politics vary noticeably by neighborhood within Gilbert. The south side is the most Republican-leaning (R+20) and the northwest side is the least Republican-leaning (R+4), a spread of about 16 points.

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

Gilbert votes Republican even though it is densely developed (about 95%, far above the Arizona average of 39%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 77% of households in Gilbert are family households, above 81% of cities.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Gilbert, AZ sits in the top tenth nationally on this measure.

Why turnout in Gilbert looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Gilbert is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Gilbert have completed high school, above 86% of cities. 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 Arizona 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.