South Manchaca is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.
About 66% of adults in South Manchaca typically vote, near the U.S. average of about 62%. Among adults in South Manchaca, ~50% vote Democratic, ~16% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How South Manchaca compares
Among neighborhoods within 5 miles, South Manchaca leans more Democratic than 11 of 23 neighbors.
South Manchaca runs about 65 points more Democratic than Texas as a whole. Texas leans Republican overall, while South Manchaca is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within South Manchaca. The south side is the most Democratic-leaning (D+58) and the northwest side is the least Democratic-leaning (D+47), a spread of about 10 points.
Why South Manchaca 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 South Manchaca, not a ranked or complete list of what matters most.
South Manchaca votes against the grain of Texas. Texas leans Republican overall, while South Manchaca runs about 65 points more Democratic. High college attainment predicts Democratic voting, and South Manchaca sits in the top quarter (about 64%, above 84% of neighborhoods).
Developed land and Democratic lean
Places with a heavily developed built environment tend to lean Democratic; South Manchaca, Austin, TX sits above the national average on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in South Manchaca looks the way it does
Turnout in South Manchaca sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- West Congress, Austin, TX D+57
- West Gate, Austin, TX D+48
- Garrison Park, Austin, TX D+50
- South Lamar, Austin, TX D+49
- East Congress, Austin, TX D+50
- Sweetbriar, Austin, TX D+52
- Galindo, Austin, TX D+54
- Saint Edwards, Austin, TX D+57
- Barton Hills, Austin, TX D+48
- Franklin Park, Austin, TX D+44
Neighborhoods with Similar Populations
- Downtown Southfield, Southfield, MI D+87
- Oakdale South, Charlotte, NC D+60
- Sonterra-Stone Oak, San Antonio, TX R+2
- Bivins Addition, Amarillo, TX R+18
- Old City-Produce and Waterfront, Oakland, CA D+60
- University District, Missoula, MT D+59
- West Somerville, Somerville, MA D+63
- Fairwood Greens, Fairwood, WA D+31
- Michigan-Martin, Detroit, MI D+36
- Fillmore, New Orleans, LA D+59
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.