New Jersey Gov. Chris Christie (R), who has walked a fine line on gay marriage, came out strongly Wednesday night against the Supreme Court's decision to declare a key part of the Defense of Marriage Act unconstitutional.

"It's just another example of judicial supremacy rather than having a government run by the people we actually vote for," Christie said NJ101.5's monthly "Ask the Governor" radio show. "I thought it was a bad decision." 

The governor called Justice Anthony Kennedy's opinion "incredibly insulting" to the members of Congress who voted for DOMA and President Bill Clinton, who signed it.

"He basically said that the only reason to pass that bill was to demean people. That's a heck of a thing to say about Bill Clinton and about the Republican congress back in the 90s," Christie said.

As he has before, Christie said that gay marriage should be decided in New Jersey by referendum. He vetoed a gay marriage bill in 2012, and said he would do so if one got to his desk again. The state allows civil unions.

Christie personally opposes gay marriage, but says he would respect the will of the people should a referendum succeed.

"Let the people decide," he said. "If it's overwhelmingly popular, then put it on the ballot and it will pass."

Christie's Democratic opponent, state Sen. Barbara Buono, has made gay marriage an issue in this fall's race. On Tuesday her daughter sent out an e-mail to her mother's supporters saying that as a gay American she has a personal stake in the race.

“As governor, he has been a giant roadblock to New Jersey achieving equality for all,” Tessa Bitterman wrote.

Buono argues that marriage is a civil right that should not be put to a ballot referendum. She is pushing for a vote to attempt to override Christie's veto.