South Westminster leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 55% of adults in South Westminster typically vote, below the U.S. average of about 62%. Among adults in South Westminster, ~33% vote Democratic, ~22% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How South Westminster compares
Among neighborhoods within 5 miles, South Westminster leans more Democratic than 7 of 20 neighbors.
South Westminster runs about 9 points more Democratic than Colorado as a whole.
Why South Westminster leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in South Westminster. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; South Westminster, Westminster, CO sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in South Westminster looks the way it does
Areas with limited routine healthcare access turn out at lower rates. South Westminster is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- South Central Westminster, Westminster, CO D+19
- Lamar Heights Area, Arvada, CO D+20
- Twin Lakes, Denver, CO D+27
- East Central Westminster, Westminster, CO D+18
- Scenic Heights, Arvada, CO D+19
- Regis, Denver, CO D+54
- Kings Mill, Broomfield, CO D+24
- Chaffee Park, Denver, CO D+50
- Northwestern Denver, Denver, CO D+48
- Berkeley, Denver, CO D+64
Neighborhoods with Similar Populations
- Greenwell Springs-Central Area, Baton Rouge, LA D+35
- Evergreen, Detroit, MI D+87
- Acres Home, Houston, TX D+71
- Rocky-Fork Blacklick Accord, Westerville, OH D+18
- Tuttle West, Dublin, OH D+14
- West Meadows, Tampa, FL D+15
- West Oak Hill, Austin, TX D+24
- Shadyside, Pittsburgh, PA D+68
- Power Ranch, Gilbert, AZ R+16
- Hartranft, Philadelphia, PA D+77
Sources and methodology
Precinct-level voting records used to fit the model come from Colorado 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.