It's that time, again. Now that Mitt Romney has returned from his trip overseas, it's back to business as usual on the campaign trail, and business as usual in the summer of an election year has a constant: VP speculation.
Political observers are on high alert watching and waiting for signs of when Romney will announce his pick for the No. 2 spot on the ticket and, more importantly, whom he has picked. ABC News' Jonathan Karl has ranked the contenders, and joining the frequently discussed...Full Story