With all the republican candidates basically just bashing Obama, how will voters know who to choose?

The President Obama bashing is obviously working for the polls but no republican candidate is giving any reasons why people should vote for them over the other republican candidates that are bashing President Obama. If it stays the way it is now Mitt Romney will just slide on in because no one is actually discussing their own potential or resume. Why should a person vote for Tim Pawlenty over Romney, why should someone vote for Michele Bachmann over Herman Cain?