New Plymouth is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 84% of adults in New Plymouth typically vote, above the U.S. average of about 62%. Among adults in New Plymouth, ~14% vote Democratic, ~70% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How New Plymouth compares
Among cities within 25 miles, New Plymouth leans more Republican than 18 of 23 neighbors.
New Plymouth runs about 29 points more Republican than Idaho as a whole.
Politics vary noticeably by neighborhood within New Plymouth. The northeast side is the most Republican-leaning (R+72) and the north side is the least Republican-leaning (R+59), a spread of about 13 points.
Why New Plymouth 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 New Plymouth, not a ranked or complete list of what matters most.
New Plymouth votes Republican even though it is densely developed (about 23%, modestly above the Idaho average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; New Plymouth, ID sits in the top quarter 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 New Plymouth looks the way it does
Turnout in New Plymouth sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fruitland, ID R+56
- Letha, ID R+69
- Payette, ID R+53
- Ontario, OR R+34
- Nyssa, OR R+38
- Parma, ID R+62
- Notus, ID R+68
- Crystal, ID R+63
- Emmett, ID R+57
- Roswell, ID R+69
Cities with Similar Populations
- New Holstein, WI R+42
- Greenwood Lake, NY R+13
- Stillwater, NY R+18
- Rock Hill, MO D+47
- Hendron, KY R+35
- Mineral Bluff, GA R+66
- Welsh, LA R+58
- Wingdale, NY R+18
- Avalon, PA D+31
- South Tucson, AZ D+44
Sources and methodology
Precinct-level voting records used to fit the model come from Idaho 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.