Annandale is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 88% of adults in Annandale typically vote, above the U.S. average of about 62%. Among adults in Annandale, ~43% vote Democratic, ~45% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Annandale compares
Among cities within 25 miles, Annandale sits roughly in the middle of the political spectrum, with 74 neighbors leaning further in the place's direction and 109 leaning the other way.
Annandale runs about 7 points more Republican than New Jersey as a whole.
Politics vary noticeably by neighborhood within Annandale. The north side runs the most Democratic (Even) and the southwest side runs the most Republican (R+12), a spread of about 13 points.
Why Annandale leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Annandale. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Annandale, NJ sits in the top 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 Annandale looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Annandale 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 75%, about 15 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Annandale own their home, about 16 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in Annandale have completed high school, above 92% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Clinton, NJ D+5
- Cedar Heights, NJ Even
- High Bridge, NJ D+6
- Jutland, NJ R+8
- Lebanon, NJ R+7
- Pittstown, NJ R+14
- Glen Gardner, NJ R+15
- Whitehouse Station, NJ R+14
- Asbury, NJ R+25
- Flemington, NJ Even
Cities with Similar Populations
- Huntington Woods, MI D+47
- West Salem, OH R+57
- Old Town, FL R+68
- Sanibel, FL R+25
- Red Oak, IA R+37
- New Martinsville, WV R+49
- Valley View, TX R+67
- White Pine, TN R+62
- Ben Lomond, CA D+31
- Farmington, NH R+24
All Local Stats
Home Services
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.