Marietta is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 60% of adults in Marietta typically vote, near the U.S. average of about 62%. Among adults in Marietta, ~13% vote Democratic, ~48% Republican, and ~39% 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 13 of 47 neighbors.
Marietta runs about 44 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within Marietta. The west side is the most Republican-leaning (R+60) and the southeast side is the least Republican-leaning (R+46), a spread of about 14 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.
Areas with low college attainment vote Republican. About 5% of adults in Marietta hold a bachelor's degree, about 21 points below the Texas average of 26%. Rural areas vote Republican, and Marietta sits in the bottom quarter on density (about 3%, below 90% of cities).
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Marietta, TX sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Marietta looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Marietta is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 11 points below the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Nickleberry, TX R+60
- Rocky Branch, TX R+60
- Dalton, TX R+60
- Douglassville, TX R+54
- Naples, TX R+53
- Old Union, TX R+84
- O'Farrell, TX R+60
- Simms, TX R+87
- Corley, TX R+75
- Linden, TX R+50
Cities with Similar Populations
- Strabane, PA R+12
- Goodwins Crossroads, SC R+58
- Augusta, WV R+66
- Chilesburg, VA R+29
- Hiwasse, AR R+52
- Crum, WV R+73
- Mercer, MO R+70
- Pembroke, ME R+27
- Hopeland, PA R+44
- Vina, CA R+50
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Sources and methodology
Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, 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.