Sun City Summerlin leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 94% of adults in Sun City Summerlin typically vote, above the U.S. average of about 62%. Among adults in Sun City Summerlin, ~51% vote Democratic, ~43% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.
How Sun City Summerlin compares
Among neighborhoods within 5 miles, Sun City Summerlin leans more Democratic than 5 of 12 neighbors.
Sun City Summerlin runs about 11 points more Democratic than Nevada as a whole.
Politics vary noticeably by block within Sun City Summerlin. The southeast side is the most Democratic-leaning (D+20) and the northwest side is the least Democratic-leaning (Even), a spread of about 19 points.
Why Sun City Summerlin 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 Sun City Summerlin, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Sun City Summerlin live in densely developed areas, about 64 points above the U.S. average of 36%.
Developed land and Democratic lean
Places with a heavily developed built environment tend to lean Democratic; Sun City Summerlin, Las Vegas, NV sits in the top quarter nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Sun City Summerlin looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sun City Summerlin is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 87% of households in Sun City Summerlin own their home, compared to around 67% in nearby neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- The Trails, Las Vegas, NV D+9
- Summerlin North, Las Vegas, NV D+5
- The Crossing, Las Vegas, NV D+6
- Lone Mountain, Las Vegas, NV D+6
- The Pueblo, Las Vegas, NV D+13
- Desert Shores, Las Vegas, NV D+22
- The Vistas, Las Vegas, NV Even
- Pioneer Park, Las Vegas, NV D+16
- Angel Park Lindell, Las Vegas, NV D+11
- The Paseos, Las Vegas, NV R+4
Neighborhoods with Similar Populations
- East Price Hill, Cincinnati, OH D+36
- Larkspur, Bend, OR D+16
- Woodlawn, Portland, OR D+78
- Norteast Citizens Action, Grand Rapids, MI D+34
- Caddo Heights-South Highlands, Shreveport, LA D+31
- Wholesale District-Skid Row, Los Angeles, CA D+53
- Westgate, Baltimore, MD D+77
- Idle Hour, Lexington, KY D+35
- Broadway Junction, Brooklyn, NY D+65
- West Adams, Los Angeles, CA D+61
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Nevada 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.