Oswego leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 55% of adults in Oswego typically vote, below the U.S. average of about 62%. Among adults in Oswego, ~20% vote Democratic, ~35% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How Oswego compares
Among cities within 25 miles, Oswego leans more Republican than 2 of 4 neighbors.
Oswego runs about 6 points more Republican than Montana as a whole.
Politics vary noticeably by neighborhood within Oswego. The southeast side is the most Republican-leaning (R+48) and the north side is the least Republican-leaning (R+21), a spread of about 27 points.
Why Oswego 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 Oswego, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in Oswego live in densely developed areas, about 12 points below the Montana average of 13%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Oswego, MT sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Oswego looks the way it does
Crowded housing lines up with lower turnout. About 4% of homes in Oswego have more than one occupant per room, above 83% of cities. Low high-school completion lines up with lower turnout, and about 95% of adults in Oswego have completed high school, above 76% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Frazer, MT R+21
- Wolf Point, MT D+6
- Nashua, MT R+56
- Fort Peck, MT R+68
- Lustre, MT R+21
- Vida, MT R+77
- Volt, MT R+25
- Weldon, MT R+79
- Poplar, MT D+30
- Vandalia, MT R+63
Cities with Similar Populations
- Callaway, KY R+78
- Prenter, WV R+67
- Shivwits, UT R+63
- Cassville, NJ R+43
- Woodenhawk, DE R+39
- Cane Creek, KY R+75
- Woodbine, TX R+71
- Matanzas Beach, IL R+56
- Posey, IL R+55
- Meriden, IL R+40
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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.