Gaston County leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 76% of adults in Gaston County typically vote, above the U.S. average of about 62%. Among adults in Gaston County, ~31% vote Democratic, ~45% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Gaston County compares
Among counties within 50 miles, Gaston County leans more Republican than 4 of 17 neighbors.
Gaston County runs about 15 points more Republican than North Carolina as a whole.
Politics vary noticeably by city within Gaston County. The west side runs the most Democratic (Even) and the northwest side runs the most Republican (R+52), a spread of about 52 points.
Why Gaston County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Gaston County, not a ranked or complete list of what matters most.
Gaston County votes Republican even though it is densely developed (about 57%, well above the North Carolina average of 27%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Gaston County, NC sits in the top quarter nationally on this measure.
Why turnout in Gaston County looks the way it does
Turnout in Gaston County 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 Counties
- Lincoln County, NC R+45
- Mecklenburg County, NC D+35
- York County, SC R+17
- Cleveland County, NC R+33
- Catawba County, NC R+33
- Cabarrus County, NC R+7
- Cherokee County, SC R+42
- Iredell County, NC R+23
- Union County, NC R+20
- Lancaster County, SC R+23
Counties with Similar Populations
- Hinds County, MS D+52
- Mahoning County, OH Even
- Tuscaloosa County, AL R+9
- Montgomery County, AL D+38
- Barnstable County, MA D+20
- Whatcom County, WA D+23
- Jefferson County, MO R+39
- Richmond City, VA D+65
- Berkeley County, SC R+13
- Cabarrus County, NC R+7
Sources and methodology
Precinct-level voting records used to fit the model come from North Carolina State Board of 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.