electionsmcp › New Jersey counties › Mercer
Mercer County, NJ
The certified 2024 map, county by county — Mercer in amber. Open it and every precinct inside is yours to model.
Model Mercer County, precinct by precinct →
2024 president
Democratic D+33.9
Votes cast
163,270
State
New Jersey
Grain
Precinct-level
Frequently asked
How did Mercer County vote in 2024?
D+33.9 for president — 107,558 Democratic · 52,274 Republican of 163,270 votes.
Can I model Mercer County precinct by precinct?
Yes — open the county in the simulator and every precinct inside it is editable, with real 2024 returns as the baseline. The county rolls up live into its statewide races.
What races cover Mercer County?
Every statewide race (U.S. Senate, Governor, the executive offices) plus its U.S. House and state-legislature districts — all modelable from the same county baseline.
Every county in New Jersey
AtlanticBergenBurlingtonCamdenCape MayCumberlandEssexGloucesterHudsonHunterdonMiddlesexMonmouthMorrisOceanPassaicSalemSomersetSussexUnionWarren
The races above this county
New Jersey U.S. Senate · Governor · the 2026 Senate board · the 2026 House board