I don't know much about Poll Position, but it seems to be following standard and therefore reliable polling practices.
Almost no Americans consider Iran the most important issue facing the US' next president. The result is close to the margin of error, so it is impossible to confidently claim that the percentage of the US population who consider Iran the most important issue is greater than zero.
Americans believe the economy will be the number one issue facing whomever is elected U.S. president in November.While this is the response I would have expected when asking about the single most important issue, I suspect a relatively low proportion of Americans would even put Iran into the top three issues.
In our national scientific polling, we asked Americans to identify the most important issue facing the newly-elected president.
In response, 75% said the economy, 13% said health care, 3% said terrorism, 3% said Iran, 6% said some other issue, and 2% expressed no opinion.
Americans of all political affiliations agreed: 78% of Democrats, 74% of Republicans, and 72% of independent pinpointed the economy as issue number one for the president-elect.
One conclusion I would draw is that the US does not have a population that would be willing to accept significant costs to make sure Iran does not enrich uranium.
More Americans than not believe Iran would respond to an attack by trying to attack the US mainland:
In our national scientific telephone survey, we asked this question: “If Israel or the U.S. attacks nuclear sites in Iran, do you believe that Iran or its allies will attempt to attack the U.S. mainland?”Americans do favor supporting Israel if Israel was to attack Iran.
49% said yes, 32% said no, and 19% expressed no opinion.
Democrats (50%), Republicans (47%), and independents (49%) agreed on the issue.
Our national scientific telephone poll found Republicans would favor U.S. backing of Israel striking Iran by a 64%-15% margin, while Democrats would oppose doing so 47%-23%. Independents side with Republicans, backing the U.S. supporting any Israeli military action on Iran 51%-21%.These Americans are far less informed than the US' foreign policy community, but would likely reverse positions and create a damaging backlash if the US ended up paying a heavy cost for any attack and Iran after the dust settled had either nuclear capabilities or nuclear weapons anyway.
Overall nationwide, Americans favored backing any Israeli military action against Iranian nuclear facilities by a 47%-27% margin.