Marietta is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 63% of adults in Marietta typically vote, near the U.S. average of about 62%. Among adults in Marietta, ~14% vote Democratic, ~49% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Marietta compares
Among cities within 25 miles, Marietta leans more Republican than 18 of 25 neighbors.
Marietta runs about 58 points more Republican than Minnesota as a whole. Minnesota leans Democratic overall, while Marietta is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Marietta. The northwest side is the most Republican-leaning (R+58) and the southeast side is the least Republican-leaning (R+38), a spread of about 20 points.
Why Marietta 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 Marietta, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Marietta sits in the bottom quarter on density and about 98% of residents are non-Hispanic white, about 12 points above the Minnesota average of 86%. Marietta runs against the grain of Minnesota, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; Marietta, MN sits in the bottom tenth nationally on this measure.
Why turnout in Marietta looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Marietta 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Marietta have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Nassau, MN R+56
- Revillo, SD R+53
- Madison, MN R+37
- Rosen, MN R+58
- Bellingham, MN R+58
- Tunerville, SD R+53
- Labolt, SD R+53
- Louisburg, MN R+34
- Strandburg, SD R+53
- Gary, SD R+53
Cities with Similar Populations
- Dossville, MS R+18
- Homewood, AR R+70
- Sebille Manor, MI R+24
- Pomona, GA D+11
- Wales Hollow, NY R+36
- Piney Fork, KY R+71
- Tomb, PA R+54
- Satterfield, PA R+54
- Boykins and Branchville, VA R+24
- Humphreys, MO R+71
Sources and methodology
Precinct-level voting records used to fit the model come from Minnesota 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.