Mercer County, New Jersey
Latest: 2024
Safe Democratic — shifted 6.1pp toward Republicans in 2024 — 40 presidential elections on record
Race & ancestry
| Group | % |
|---|---|
▶White (Non-Hispanic)(13) | 42.7% |
▶Hispanic / Latino(19) | 23.1% |
▶Black / African American(14) | 18.5% |
▶Asian(6) | 12.4% |
▶Middle Eastern / North African(9) | 1.1% |
▶Native American / Alaska Native(2) | 1.4% |
Multiracial / Other | 1.9% |
Religious adherence
| Tradition | % Pop | % Adherents |
|---|---|---|
| Catholic | 27.8% | 58.1% |
| Mainline Protestant | 6.6% | 13.8% |
| Evangelical Protestant | 5.5% | 11.4% |
| Other | 5.0% | 10.4% |
| Black Protestant | 2.3% | 4.8% |
| Orthodox Christian | 0.7% | 1.4% |
| LDS (Mormon) | 0.4% | 0.8% |
| Non-religious | 52.2% | — |
Presidential results
| Year | Result |
|---|---|
| 2024 | Harris+33.9 |
| 2020 | Biden+40.0 |
| 2016 | Clinton+37.1 |
| 2012 | Obama+36.7 |
| 2008 | Obama+36.0 |
| 2004 | Kerry+23.4 |
| 2000 | Gore+27.0 |
| 1996 | Clinton+28.1 |
| 1992 | Clinton+14.4 |
Mercer, New Jersey is a county that has a population of 385,864. In the 2024 presidential election, it voted Democratic with a margin of D+33.9. Akashic Edge tracks 40 presidential elections here, dating back to 1868.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 65.9% | 32.0% | D+33.9 | R+6.1 |
| 2020 | 69.1% | 29.1% | D+40.0 | D+2.9 |
| 2016 | 66.3% | 29.2% | D+37.1 | D+0.4 |
| 2012 | 67.2% | 30.5% | D+36.7 | D+0.7 |
| 2008 | 67.3% | 31.3% | D+36.0 | D+12.6 |
| 2004 | 61.3% | 37.9% | D+23.4 | R+3.6 |
| 2000 | 61.4% | 34.4% | D+27.0 | R+1.2 |
| 1996 | 58.9% | 30.8% | D+28.1 | D+13.8 |
| 1992 | 49.1% | 34.7% | D+14.4 | D+11.9 |
| 1988 | 50.8% | 48.3% | D+2.5 | D+5.9 |
| 1984 | 48.1% | 51.5% | R+3.5 | R+9.3 |
| 1980 | 47.4% | 41.6% | D+5.8 | R+2.7 |
| 1976 | 53.2% | 44.7% | D+8.5 | D+13.9 |
| 1972 | 46.7% | 52.0% | R+5.3 | R+19.6 |
| 1968 | 50.4% | 36.1% | D+14.2 | R+28.2 |
| 1964 | 71.2% | 28.7% | D+42.5 | D+20.0 |
| 1960 | 61.2% | 38.7% | D+22.5 | D+25.5 |
| 1956 | 48.3% | 51.4% | R+3.1 | R+9.8 |
| 1952 | 53.1% | 46.4% | D+6.7 | R+6.6 |
| 1948 | 55.6% | 42.3% | D+13.3 | — |
What defines Mercer?
It has a diverse, highly educated electorate — the core of the modern Democratic coalition.
County in State Context
Ask the Historian
Explore this county's political evolution with the Historian
Key Insights
High-confidence patterns distilled from this geography's election history.
- Has voted Democratic in the last 5 presidential elections
- Latest election (2024) was a Democratic landslide with a 33.9% margin
- College attainment is 45% — 12pp above the national average. Similar education levels correlate with Democratic lean nationally
Located In
Mercer sits inside these higher-level geographies.