Sayreville is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 62% of adults in Sayreville typically vote, near the U.S. average of about 62%. Among adults in Sayreville, ~32% vote Democratic, ~30% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How Sayreville compares
Among cities within 25 miles, Sayreville sits roughly in the middle of the political spectrum, with 99 neighbors leaning further in the place's direction and 114 leaning the other way.
Politically, Sayreville sits close to the rest of New Jersey.
Politics vary noticeably by neighborhood within Sayreville. The south side runs the most Democratic (D+31) and the east side runs the most Republican (R+18), a spread of about 49 points.
Why Sayreville leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Sayreville. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Sayreville, NJ sits in the top 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 Sayreville looks the way it does
Renters vote less often than owners. About 41% of households in Sayreville rent, about 16 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 8% of homes in Sayreville have more than one occupant per room, above 94% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- South River, NJ R+13
- Parlin, NJ Even
- Madison Park, NJ D+17
- East Brunswick, NJ D+4
- South Amboy, NJ R+13
- Old Bridge, NJ R+14
- Milltown, NJ R+8
- Spotswood, NJ R+22
- Laurence Harbor, NJ R+14
- Highland Park, NJ D+45
Cities with Similar Populations
- Sikeston, MO R+21
- Roscoe, IL R+17
- Bon Air, VA D+17
- Lincoln, RI D+5
- Milford, DE R+5
- Ludlow, MA R+10
- Lebanon, IN R+35
- La Crescenta-Montrose, CA D+16
- Oneonta, NY D+22
- Maryland City, MD D+55
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from New Jersey Division of 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.