A judicial watchdog group is calling Wisconsin the "ground zero" of all that's wrong in judicial elections.

Voters are deciding Tuesday whether to retain conservative Justice David Prosser or to bring in liberal Joanne Kloppenburg.

At stake - not only the balance of power on the court but the fate of the state's collective bargaining law.

Judicial watchers say they're also concerned that big money interests have taken over Wisconsin's high court elections, just like they have in other states.

From 2000 to 2006, just over $1 million was spent on Supreme Court elections in the state. From 2007 to 2009, more than $10 million was spent, much of it in cynical attack ads.