Scott Clement digs into the numbers:
Paul’s preference for diplomacy is … shared with many Republicans. More than six in 10 picked “economic and diplomatic efforts” as the best Iran policy right now, according to a November CNN/ORC survey; fewer than one in four chose military action. Paul’s call for eschewing sanctions in favor of free trade agreements, however, stands in stark contrast to his fellow partisans who see Iran as a genuine threat and an enemy. More than nine in 10 Republicans in a 2010 Pew Research Center poll approved of increasing sanctions in an effort to keep Iran from developing a nuclear weapon.
Earlier commentary on the subject here.