O'reilly leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 63% of adults in O'reilly typically vote, near the U.S. average of about 62%. Among adults in O'reilly, ~37% vote Democratic, ~26% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How O'reilly compares
Among cities within 25 miles, O'reilly leans more Democratic than 34 of 66 neighbors.
O'reilly runs about 41 points more Democratic than Mississippi as a whole. Mississippi leans Republican overall, while O'reilly is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within O'reilly. The east side runs the most Democratic (D+42) and the northwest side runs the most Republican (R+40), a spread of about 82 points.
Why O'reilly 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 O'reilly, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 39% of adults in O'reilly hold a bachelor's degree, about 11 points above the U.S. average of 28%. O'reilly runs against the grain of Mississippi, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; O'reilly, MS 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 O'reilly looks the way it does
Areas with limited routine healthcare access turn out at lower rates. O'reilly 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 9%, about 51 points below the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Boyle, MS R+23
- Skene, MS R+37
- Shaw, MS D+61
- Steiner, MS R+21
- Cleveland, MS D+22
- Boyer, MS R+4
- Zumbro, MS Even
- Renova, MS D+45
- Fairview, MS R+3
Cities with Similar Populations
- Alger, WA R+23
- Graball, AL D+5
- Plain, WA R+6
- Dry Creek, WV R+76
- Little Hope, TX R+73
- Lake Harbor, FL D+50
- Marengo, NY R+41
- Dothan, TX R+73
- Lake Suzy, FL R+52
- Yankee Lake, OH R+41
Sources and methodology
Precinct-level voting records used to fit the model come from Mississippi 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.