Newcastle is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 69% of adults in Newcastle typically vote, above the U.S. average of about 62%. Among adults in Newcastle, ~13% vote Democratic, ~56% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Newcastle compares
Among cities within 25 miles, Newcastle leans more Republican than 37 of 78 neighbors.
Newcastle runs about 50 points more Republican than Ohio as a whole.
Politics vary noticeably by neighborhood within Newcastle. The southwest side is the most Republican-leaning (R+72) and the east side is the least Republican-leaning (R+59), a spread of about 13 points.
Why Newcastle leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Newcastle. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Newcastle, OH sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Newcastle looks the way it does
Turnout in Newcastle 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
- Walhonding, OH R+66
- West Bedford, OH R+61
- New Guilford, OH R+69
- Bladensburg, OH R+71
- Nellie, OH R+60
- Cooperdale, OH R+64
- Warsaw, OH R+62
- Tunnel Hill, OH R+64
- West Carlisle, OH R+63
- Martinsburg, OH R+66
Cities with Similar Populations
- Charlieville, LA R+83
- Bobtown, IN R+65
- Port Clyde, ME D+26
- Kalem, MS R+69
- Deanville, PA R+68
- Ridgeport, IA R+27
- Secondcreek, WV R+63
- Naxera, VA R+35
- Wiseburg, WV R+64
- Nu Mine, PA R+61
Sources and methodology
Precinct-level voting records used to fit the model come from Ohio 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.