"Walker leads Barrett 52% to 45% in new Marquette Law School poll."

Likely voters. Margin of error +/-4. In early May, Walker led by 50% to 44% in this poll.

The same Marquette poll that showed GOP incumbent Walker leading in his recall fight also showed Democratic President Barack Obama leading in his re-election fight against Republican Mitt Romney, 51% to 43%. The two were tied in Marquette’s early May poll.   

That's a big advance for Obama. Not surprising Obama wants nothing to do with the Wisconsin recall election.

ADDED: More here:

Majorities supported increases in public employee contributions to health and retirement benefits, with 75 percent in favor and 22 percent opposed.... A smaller majority, 55 percent, said they favored limiting collective bargaining for most public employees, while 41 percent opposed such limits. A subsequent question found a closer division on collective bargaining, with 50 percent wanting to keep the current law on bargaining and 45 percent wishing for a return to the previous law prior to last year.

So on main issues that fired the protests last year, the people clearly support Walker.