Captain John Mullan leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 80% of adults in Captain John Mullan typically vote, above the U.S. average of about 62%. Among adults in Captain John Mullan, ~45% vote Democratic, ~35% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Captain John Mullan compares
Among neighborhoods within 5 miles, Captain John Mullan is the least Democratic-leaning.
Captain John Mullan runs about 32 points more Democratic than Montana as a whole. Montana leans Republican overall, while Captain John Mullan is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within Captain John Mullan. The southeast side runs the most Democratic (D+22) and the northwest side runs the most Republican (R+8), a spread of about 30 points.
Why Captain John Mullan leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Captain John Mullan, not a ranked or complete list of what matters most.
Captain John Mullan votes against the grain of Montana. Montana leans Republican overall, while Captain John Mullan runs about 32 points more Democratic.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Captain John Mullan, Missoula, MT sits above the national average on this measure.
Why turnout in Captain John Mullan looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in Captain John Mullan have completed high school, about 8 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Westside, Missoula, MT D+35
- Emma Dickinson Orchard Homes, Missoula, MT D+31
- Franklin To The Fort, Missoula, MT D+29
- Northside, Missoula, MT D+34
- Rose Park, Missoula, MT D+59
- Heart of Missoula, Missoula, MT D+51
- Southgate Triangle, Missoula, MT D+26
- University District, Missoula, MT D+59
- Lewis and Clark, Missoula, MT D+47
- South 39th Street, Missoula, MT D+14
Neighborhoods with Similar Populations
- Willamette-West Linn, West Linn, OR D+31
- Forest Trails, Jacksonville, FL D+49
- Shore Acres, Staten Island, NY R+16
- Golden Gate, Emeryville, CA D+81
- Eastlake Vistas, Chula Vista, CA D+19
- The Ws, The Colony, TX R+9
- Hudson Avenue Historic District, Newark, OH R+24
- McKnight, Springfield, MA D+55
- Bartolo Square North, Oxnard, CA D+39
- Evergreen, Everett, WA D+7
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.