Wisconsin gov. candidates vie for support from police unions

The candidates for governor continue to compete for police union votes.

Democrat Tom Barrett has announced an endorsement from the National Association of Police Organizations. The group represents 1000 police units across the U.S. 

Earlier, Barrett picked up the backing of the Wisconsin Professional Police Association, as well as the West Allis police officers' union, which supported Republican Scott Walker in 2010. Mayor Barrett says he'd like to win over some rank and file members of the Milwaukee police officers' union. He says the cop on the beat can't trust Scott Walker to preserve collective bargaining powers.

But the leader of the Milwaukee Police Association has reaffirmed his union's endorsement of Gov. Walker. Mike Crivello won't say if the governor has promised not to target collective bargaining by police.

Walker says he continues to want to guarantee that there will be adequate police and fire protection across the state, meaning he doesn't want to anger those unions with a sweeping attack on their contract bargaining powers.