Poll : Mitt Romney 's campaign challenges a report on the candidate 's tax plan . Comment: A new poll shows Obama ahead in Ohio and two other battleground states . The Romney campaign launches a new ad criticizing the auto industry bailout .
Mitt Romney 's campaign challenges a report on the candidate 's tax plan . Comment: A new poll shows Obama ahead in Ohio and two other battleground states . The Romney campaign launches a new ad criticizing the auto industry bailout .