Are Americans against pulling out of the Iran deal, or just don’t know?

Two polls on Americans’ views of the Iran nuclear deal tell us more about the hazards of polling than about what Americans actually think about the deal.

CNN asks Americans whether they believed the US should withdraw from the deal — yes or no. “Almost two-thirds of Americans — 63% — believe that the US should not withdraw from the Iran nuclear agreement,” the network finds.

JUST IN: Almost two-thirds of Americans — 63% — believe that the US should not withdraw from the Iran nuclear agreement https://t.co/vSI3BPNw2h

— CNN (@CNN) May 8, 2018

CBS, however, goes that vital extra step of giving respondents an option to say they “don’t know enough to say.”

A funny thing happens when people are allowed to admit they don’t know: Just 21% oppose withdrawing from the deal, and 21% support it, both dwarfed by the 57% who just don’t know.

President Trump says he will announce his decision on the Iran nuclear agreement Tuesday afternoon. Six world powers, including the U.S., brokered the deal in 2015 to halt Iran's nuclear program in exchange for sanctions relief https://t.co/IwpFKBBNhK pic.twitter.com/daDFaWMfj1

— CBS News (@CBSNews) May 8, 2018