Democratic City Council President Francisco "Frank" Moran coasted to victory in a race where no Republicans were in the race.
Incumbents in Atlantic City and Edison were hoping to retain their seats, while a new leader was being chosen in Hoboken after its mayor chose not to seek re-election.
Hundreds of people in Atlantic City had already voted before Election Day, including at least one dead person. Absentee ballots were expected to play a decisive role in the race, with more than 2,500 applications having been made to county election officials.
Incumbent Republican Mayor Don Guardian alleges a voter fraud operation run on behalf of his Democratic opponent, City Council President Frank Gilliam Jr., is paying people to vote Democratic. Guardian said he believes absentee ballots have been cast on behalf of dead people and former residents.
The elections board did throw out one ballot found to have been cast in the name of a woman who died in 2015.
The prosecutor's office has not responded to requests for comment.
Gilliam denies anyone from his campaign has done anything wrong, citing absentee ballots as a legal, time-honored way of collecting voter support.
Mayoral races were also being held in Jersey City - where voters were choosing between incumbent Steven Fulop and challenger Bill Matsikoudis - and in Hoboken, where six candidates were running to succeed Dawn Zimmer, who declined to run for a third term.
In Atlantic City, the former head of the city's special improvement district, Guardian, 64, tried in vain to fight off a state takeover by Gov. Chris Christie, a fellow Republican, who became convinced Guardian was not willing to take the steps needed to fix the city's finances in an era of slimmed-down gambling revenue.
Gilliam, 47, owns a student tutoring service and is completing a second four-year term on council. He supported Democratic gubernatorial candidate Phil Murphy's plan to legalize marijuana for recreational use, and faulted Guardian for not heading off a state takeover.
Murphy won the governor's seat on Tuesday, beating GOP Lt. Gov. Kim Guadagno.
Independent candidate Joseph Polillo, 70, is retired from his job as Atlantic City's chief license inspector, and is making his second run for mayor. He blames Guardian and Gilliam for allowing the takeover.
Henry Green, 46, is the Green Party candidate. He works as a local radio show co-host and producer. His goals include ending the takeover, reducing property taxes and increasing youth recreation opportunities.
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