Clark County leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 54% of adults in Clark County typically vote, below the U.S. average of about 62%. Among adults in Clark County, ~30% vote Democratic, ~24% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How Clark County compares
Clark County runs about 15 points more Democratic than Nevada as a whole. Nevada leans Republican overall, while Clark County is one of the few Democratic-leaning pockets.
Politics vary noticeably by city within Clark County. The north side is the most Democratic-leaning (D+21) and the southeast side is the least Democratic-leaning (Even), a spread of about 20 points.
Why Clark County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Clark County, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 92% of residents in Clark County live in densely developed areas, about 56 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 36% of adults in Clark County have never been married, above 87% of counties. Clark County runs against the grain of Nevada, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Clark County, NV sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Clark County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Clark County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 41% of households in Clark County rent, about 17 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 5% of homes in Clark County have more than one occupant per room, above 92% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Nye County, NV R+41
- Mohave County, AZ R+37
- Lincoln County, NV R+66
- Washington County, UT R+51
- Iron County, UT R+53
- La Paz County, AZ R+28
- Kane County, UT R+59
- Esmeralda County, NV R+61
- San Bernardino County, CA Even
- Inyo County, CA R+4
Counties with Similar Populations
- King County, WA D+45
- San Bernardino County, CA Even
- Queens County, NY D+23
- Riverside County, CA Even
- Tarrant County, TX D+3
- Bexar County, TX D+14
- Broward County, FL D+20
- Santa Clara County, CA D+32
- Dallas County, TX D+27
- Miami-Dade County, FL R+8
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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.