How to read a poll

A Pew Research poll finds that of the 79% of Americans (surprised it's so low) who have heard about President Hussein Obama's sellout to a nuclear Iran, most are opposed to the deal, don't trust Iran to abide by it, and have limited confidence in the West's ability to monitor it (Hat Tip: Memeorandum).

Among the 79% of Americans who have heard about the agreement, just
38% approve, while 48%