Washington (CNN) - Rand Paul has done something his father never did - top the list of potential Republican presidential candidates in a national poll. According to a new CNN/ORC International survey, 16% of Republicans and independents who lean toward the GOP say they would be likely to support the senator from Kentucky for the 2016 nomination. Rep. Paul Ryan of Wisconsin, the 2012 Republican vice presidential nominee, garnered 15%, with longtime Texas Gov. Rick Perry, who's considering another bid for the White House, at 11%. Former Arkansas Gov. Mike Huckabee, a 2008 GOP presidential candidate, is the only other...