Let the comedy begin.

(The Hill) β€” Vice President Biden has been unleashed on the campaign trail, he said Tuesday night, telling a crowd at a Chicago fundraiser “we are going to win this race.”

Biden joins President Obama in the new phase of the 2012 reelection campaign, targeting Republicans in Congress while at the same time batting down unflattering reports from a new book.

Telling the 200 people gathered, Biden appeared to be in his classic, convivial form, saying “The president said, ‘Look, Joe, just go be Joe. So he let me loose.”

The vice president paid a visit to the campaign’s headquarters in downtown Chicago, where he said he “noticed four of my eight top people from my campaign are now in the headquarters so I am β€˜all in.”