Answering the musical question of: How many times can a guy announce he's running for president? (Answer: As many times as the media will cover it), Tim Pawlenty on Monday officially declared once again that he's running to try to knock off Barack Obama in next year's presidential election.

Speaking in the all-so-important state of Iowa, the home of the first official race of the 2012 primary season, Pawlenty played on the theme he's apparently now cultivating: a bold truth-teller who will provide needed change to the policies of Obama:

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