Lake County leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 75% of adults in Lake County typically vote, above the U.S. average of about 62%. Among adults in Lake County, ~29% vote Democratic, ~46% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Lake County compares
Among counties within 50 miles, Lake County is the least Republican-leaning.
Politically, Lake County sits close to the rest of Montana.
Politics vary noticeably by city within Lake County. The southwest side is the most Republican-leaning (R+40) and the north side is the least Republican-leaning (R+13), a spread of about 27 points.
Why Lake County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Lake County. The lean here lands roughly where demographic data alone would predict.
High-school completion, developed land, and voter turnout
Places that combine high-school-completion-heavy adults and a rural land-use pattern tend to turn out at a higher rate, as Lake County, MT does.
Why turnout in Lake County looks the way it does
Turnout in Lake 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
- Flathead County, MT R+32
- Mineral County, MT R+53
- Sanders County, MT R+54
- Missoula County, MT D+16
- Ravalli County, MT R+43
- Lincoln County, MT R+50
- Granite County, MT R+38
- Glacier County, MT D+32
- Shoshone County, ID R+43
- Teton County, MT R+60
Counties with Similar Populations
- Clarendon County, SC R+8
- Washington County, ME R+24
- Pontotoc County, MS R+65
- Polk County, MN R+31
- Stone County, MO R+55
- Delta County, CO R+35
- Adams County, NE R+42
- Summit County, CO D+23
- Bee County, TX R+22
- Kleberg County, TX R+6
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Sources and methodology
Precinct-level voting records used to fit the model come from Montana 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.