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

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

Pasadena leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.

 

About 41% of adults in Pasadena typically vote, below the U.S. average of about 62%. Among adults in Pasadena, ~19% vote Democratic, ~22% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.

How Pasadena compares

Among cities within 25 miles, Pasadena leans more Republican than 32 of 63 neighbors.

Pasadena runs about 5 points more Democratic than Texas as a whole.

Politics vary noticeably by neighborhood within Pasadena. The southwest side runs the most Democratic (D+6) and the southeast side runs the most Republican (R+27), a spread of about 34 points.

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

Pasadena votes Republican even though it is densely developed (about 97%, far above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in Pasadena are family households, above 77% of cities.

High-school completion, developed land, and voter turnout

Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as Pasadena, TX does.

Why turnout in Pasadena looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Pasadena is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 7 points below the Texas average of 54%. Renters vote less often than owners, and about 44% of households in Pasadena rent, about 19 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 72% of adults in Pasadena have completed high school, below 97% 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 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.