Republican Wisconsin Gov. Scott Walker said despite a recent win at the state supreme court, his state public sector union reforms were still at stake in the next election.

The governor, who is locked in an extremely tight race for re-election against Democratic candidate Mary Burke, said she would use her authority to undermine the reforms, known as Act 10, should she get elected.

"Act 10 will go forward if I am elected governor. I think it is questionable how much of Act 10 will be in place if Mary Burke is elected," Walker told the Green Bay Press-Gazette.

"Not only because she is aligned with the unions and others who want it to be repealed but also because the very lawsuit that was brought forward ... came out in Madison, where Mary Burke is on the school board. That school board is one of the few in the state that refuses to use our reforms to the fullest and has essentially put in place a pre-Act 10 contract with their employees," he added.

The Wisconsin Supreme Court ruled 5-2 Thursday that Walker's reforms were constitutional, effectively ending attempts to get the law thrown out in court.

Walker noted the reforms have saved Wisconsin taxpayers an estimated $3 billion and even said they were responsible for recent rises in student achievements.

Recent polls have shown the race between Walker and Burke to be evenly split, with a Marquette University Law School poll giving both candidates 46-percent support.