Cory Booker handily won a second term as mayor of Newark last night, and told supporters that his administration will continue to deliver change even as the New Jersey city faces a difficult financial future.

“This city, this state, this nation . . . they ain’t seen nothin’ yet,” he bellowed to a cheering crowd at the Robert Treat Hotel.

With 98 percent of precincts reporting, Booker had more than 21,000 votes, to about 12,500 for former county Prosecutor Clifford Minor.