Northside Northline, Houston, TX Political Map | Democrat & Republican Areas in Northside Northline

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

Northside Northline leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.

 

About 41% of adults in Northside Northline typically vote, below the U.S. average of about 62%. Among adults in Northside Northline, ~27% vote Democratic, ~14% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.

How Northside Northline compares

Among neighborhoods within 5 miles, Northside Northline leans more Democratic than 4 of 7 neighbors.

Northside Northline runs about 45 points more Democratic than Texas as a whole. Texas leans Republican overall, while Northside Northline is one of the few Democratic-leaning pockets.

Politics vary noticeably by block within Northside Northline. The west side is the most Democratic-leaning (D+50) and the southwest side is the least Democratic-leaning (D+10), a spread of about 40 points.

Why Northside Northline leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Northside Northline, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in Northside Northline live in densely developed areas, about 64 points above the U.S. average of 36%. Northside Northline runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Northside Northline, Houston, TX sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Northside Northline looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Northside Northline 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 37%, about 16 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 65% of adults in Northside Northline have completed high school, below 97% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

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.