Trump running mate

Conservative Darkhorse Rick Santorum Gains Support For VP

As a succession of establishment Republican names, such as Gov. Chris Christie, Sen. Bob Corker, Sen. John Thune and Gov. John Kasich, have surfaced as potential VP nominees, and been knocked-down by conservatives, one conservative darkhorse -- Pennsylvania's Rick Santorum keeps popping back up. Click here to vote in our final pre-convention VP poll.