Sarpy County leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 80% of adults in Sarpy County typically vote, above the U.S. average of about 62%. Among adults in Sarpy County, ~36% vote Democratic, ~44% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Sarpy County compares
Among counties within 50 miles, Sarpy County leans more Republican than 2 of 12 neighbors.
Sarpy County runs about 11 points more Democratic than Nebraska as a whole.
Politics vary noticeably by city within Sarpy County. The northeast side runs the most Democratic (D+3) and the southwest side runs the most Republican (R+37), a spread of about 39 points.
Why Sarpy 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 Sarpy County, not a ranked or complete list of what matters most.
Sarpy County votes Republican even though it is densely developed (about 79%, far above the Nebraska average of 17%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 72% of households in Sarpy County are family households, above 86% of counties.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Sarpy County, NE sits in the top tenth nationally on this measure.
Why turnout in Sarpy County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sarpy County 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 95% of adults in Sarpy County have completed high school, above 94% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Douglas County, NE D+17
- Cass County, NE R+42
- Pottawattamie County, IA R+18
- Mills County, IA R+33
- Washington County, NE R+42
- Saunders County, NE R+46
- Otoe County, NE R+39
- Dodge County, NE R+31
- Fremont County, IA R+47
- Harrison County, IA R+42
Counties with Similar Populations
- Outagamie County, WI R+13
- Saginaw County, MI D+2
- El Dorado County, CA R+13
- Ellis County, TX R+31
- Santa Rosa County, FL R+49
- Butler County, PA R+28
- Livingston County, MI R+23
- Beaufort County, SC R+9
- Charlotte County, FL R+33
- Hernando County, FL R+33
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.