Errol, NH Political Map | Democrat & Republican Areas in Errol

Errol leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican. These figures are model estimates: New Hampshire did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.

 
Errol, NH block-group political-lean map
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About 83% of adults in Errol typically vote, above the U.S. average of about 62%. Among adults in Errol, ~25% vote Democratic, ~58% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.

Errol, NH block-group voter-turnout map
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How Errol compares

Among cities within 25 miles, Errol is the most Republican-leaning.

Errol runs about 43 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and Errol sits clearly on the Republican side.

Why Errol 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 Errol, not a ranked or complete list of what matters most.

Areas with a high white share and below-average college attainment vote Republican. In Errol, about 98% of residents are non-Hispanic white, about 26 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 22 points below the New Hampshire average of 38%. Errol runs against the grain of New Hampshire, a Republican-leaning outlier in a roughly evenly split state.

Cancer-screening access and voter turnout

Places with high colon-cancer-screening access tend to turn out at a higher rate; Errol, NH sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Errol looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Errol 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 63%, above 59% of cities. Homeowners vote more often than renters, and about 96% of households in Errol own their home, about 21 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.

Cities with Similar Populations

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Sources and methodology

Precinct-level voting records used to fit the model come from New Hampshire Secretary of State, Elections Division, 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. NH did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.