Jamestown is a Democratic stronghold. About 81% of voters here vote Democratic and 19% Republican.
About 97% of adults in Jamestown typically vote, above the U.S. average of about 62%. Among adults in Jamestown, ~78% vote Democratic, ~18% Republican, and ~4% don't vote. The map below shows estimated turnout by block group.
How Jamestown compares
Among cities within 25 miles, Jamestown leans more Democratic than 41 of 44 neighbors.
Jamestown runs about 50 points more Democratic than Colorado as a whole.
Why Jamestown 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 Jamestown, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 74% of adults in Jamestown hold a bachelor's degree, about 45 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Jamestown, CO sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Jamestown looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Jamestown 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 75%, about 15 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Jamestown own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 99% of adults in Jamestown have completed high school, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ward, CO D+56
- Sugarloaf, CO D+68
- Boulder, CO D+69
- Gunbarrel, CO D+55
- Nederland, CO D+54
- Allenspark, CO D+43
- Niwot, CO D+47
- Lyons, CO D+34
- Hygiene, CO D+29
Cities with Similar Populations
- Wren, OR D+29
- Rigsby, OK R+65
- Rowena, TX R+79
- Round Hill, KY R+71
- Olcott, NY R+36
- Fanning, MO R+63
- Lucerne Mines, PA R+28
- Fackler, AL R+75
- Kopperston, WV R+80
- Edna, KS R+72
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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.