Lafayette leans heavily Democratic by roughly 50 points: about 75% of voters vote Democratic and 25% Republican.
About 83% of adults in Lafayette typically vote, above the U.S. average of about 62%. Among adults in Lafayette, ~62% vote Democratic, ~21% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Lafayette compares
Among cities within 25 miles, Lafayette leans more Democratic than 52 of 63 neighbors.
Lafayette runs about 38 points more Democratic than Colorado as a whole.
Politics vary noticeably by neighborhood within Lafayette. The southwest side is the most Democratic-leaning (D+59) and the northeast side is the least Democratic-leaning (D+40), a spread of about 19 points.
Why Lafayette leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Lafayette, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 71% of residents in Lafayette live in densely developed areas, about 35 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Lafayette sits in the top quarter (about 62%, above 97% of cities). A high never-married share predicts Democratic voting, and about 32% of adults in Lafayette have never been married, above 80% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Lafayette, CO 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 Lafayette looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lafayette 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 72%, about 12 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Louisville, CO D+59
- Erie, CO D+21
- Superior, CO D+51
- Broomfield, CO D+22
- Gunbarrel, CO D+55
- Niwot, CO D+47
- Boulder, CO D+69
- Westminster, CO D+19
- Northglenn, CO D+12
- Dacono, CO R+16
Cities with Similar Populations
- Cornelius, NC D+3
- Drexel Hill, PA D+32
- Oak Ridge, TN R+15
- Van Buren, AR R+47
- Endicott, NY Even
- Port Chester, NY D+18
- Wadsworth, OH R+22
- Thomasville, GA R+6
- New City, NY Even
- Orcutt, CA R+8
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.