VIDEO: McDonnell Will be 'Top Advocate' for Romney, Dismisses Calls for Candidate's Tax Returns

Virginia Gov. Bob McDonnell was asked Tuesday if he would be a better choice than Florida Sen. Marco Rubio for presumptive Republican presidential candidate Mitt Romney's running mate. 

"I will be the top advocate for Mitt Romney in Virginia," said McDonnell, after laughing at the question. 

McDonnell also said President Barack Obama (D) is a "good man, a good family man, he's worked hard, but the policies haven't worked."

McDonnell was in Dale City on Tuesday for the groundbreaking ceremony for

ABC News reported McDonnell will join Romney on the bus tour.   

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