Richardson, TX Political Map | Democrat & Republican Areas in Richardson

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

Richardson leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.

 

About 59% of adults in Richardson typically vote, near the U.S. average of about 62%. Among adults in Richardson, ~34% vote Democratic, ~25% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Richardson compares

Among cities within 25 miles, Richardson leans more Democratic than 59 of 69 neighbors.

Richardson runs about 27 points more Democratic than Texas as a whole. Texas leans Republican overall, while Richardson is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Richardson. The southwest side is the most Democratic-leaning (D+23) and the east side is the least Democratic-leaning (D+5), a spread of about 19 points.

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

Dense areas vote Democratic. About 98% of residents in Richardson live in densely developed areas, about 62 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Richardson sits in the top quarter (about 56%, above 96% of cities). A high never-married share predicts Democratic voting, and about 38% of adults in Richardson have never been married, above 91% of cities.

Population density and Democratic lean

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

Why turnout in Richardson looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Richardson is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 48% of households in Richardson rent, compared to around 32% in nearby cities. Learn more about the findings and methodology on the political spectrum map.

All Local Stats

Home Services

Sources and methodology

Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, 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.