Harper County is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 67% of adults in Harper County typically vote, near the U.S. average of about 62%. Among adults in Harper County, ~11% vote Democratic, ~56% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Harper County compares
Among counties within 50 miles, Harper County leans more Republican than 4 of 7 neighbors.
Harper County runs about 49 points more Republican than Kansas as a whole.
Politics vary noticeably by city within Harper County. The southwest side is the most Republican-leaning (R+78) and the north side is the least Republican-leaning (R+58), a spread of about 20 points.
Why Harper County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Harper County. The lean here lands roughly where demographic data alone would predict.
Population density and Republican lean
Places with low population density tend to lean Republican; Harper County, KS sits below the national average on this measure.
Why turnout in Harper County looks the way it does
Turnout in Harper 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
- Kingman County, KS R+58
- Barber County, KS R+69
- Grant County, OK R+70
- Sumner County, KS R+50
- Alfalfa County, OK R+76
- Pratt County, KS R+53
- Woods County, OK R+57
- Sedgwick County, KS R+7
- Garfield County, OK R+43
- Cowley County, KS R+38
Counties with Similar Populations
- Greer County, OK R+67
- Norton County, KS R+71
- Cherry County, NE R+67
- Day County, SD R+42
- Cotton County, OK R+66
- Washington County, KS R+67
- Fillmore County, NE R+57
- Haskell County, TX R+65
- Mahnomen County, MN R+16
- Floyd County, TX R+50
Sources and methodology
Precinct-level voting records used to fit the model come from Kansas 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.