Plattsmouth leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 86% of adults in Plattsmouth typically vote, above the U.S. average of about 62%. Among adults in Plattsmouth, ~27% vote Democratic, ~60% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Plattsmouth compares
Among cities within 25 miles, Plattsmouth leans more Republican than 17 of 48 neighbors.
Plattsmouth runs about 18 points more Republican than Nebraska as a whole.
Politics vary noticeably by neighborhood within Plattsmouth. The southeast side is the most Republican-leaning (R+44) and the north side is the least Republican-leaning (R+32), a spread of about 12 points.
Why Plattsmouth 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 Plattsmouth, not a ranked or complete list of what matters most.
Plattsmouth votes Republican even though it is densely developed (about 35%, well above the Nebraska average of 17%). 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; Plattsmouth, NE sits in the top quarter nationally on this measure.
Why turnout in Plattsmouth looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Plattsmouth have completed high school, about 7 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- La Platte, NE R+43
- Murray, NE R+46
- Pacific Junction, IA R+39
- Bartlett, IA R+46
- Glenwood, IA R+26
- Offutt AFB, NE R+5
- Richfield, NE R+44
- Cedar Creek, NE R+48
- Union, NE R+45
- Bellevue, NE R+2
Cities with Similar Populations
- Chamblee, GA D+37
- Weston, MA D+33
- Temple Hills, MD D+86
- Palos Verdes Estates, CA D+15
- Camden, DE Even
- Seven Hills, OH R+10
- Bluff City, TN R+63
- Hazard, KY R+54
- Urbana, MD D+28
- Egg Harbor City, NJ R+11
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Sources and methodology
Precinct-level voting records used to fit the model come from Nebraska 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.