The question of gay marriage is also in the Legislature. In 2012, lawmakers passed a law to allow gay marriage, but Christie vetoed it.
On Friday, Democratic lawmakers called on Christie not to appeal the ruling.
"It is also a stark reminder that Governor Christie stands on the wrong side of history," said state Sen. Barbara Buono, who's running for governor and has an openly gay daughter. "At every turn, he has prevented our gay brothers and sisters from enjoying the same rights as other New Jerseyans."
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Associated Press writer Katie Zezima in Montclair, N.J., and Angela Delli Santi in Ewing, N.J., contributed to this report.
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