Polls are not in themselves news, they are polls which, if legitimate, follow rules of impartiality in selection of subjects and in formulation of questions. Several polls have asked the question, "Is Hillary Clinton corrupt/a criminal?" They have asked this same question year after year, and correlated the answers with party self-identification of the polled. The results, during the Obama administration, show that a majority of Republicans in recent years believe that Hillary is corrupt/a criminal and that Obama is a Muslim who wasn't born in the USA.

Maybe you think polls are junk, but they're not. I know you recently wrote in a similar vein that macroeconomics is no more predictive than astrology, but that, too, is wrong.  And I know that you think "the media" is a singular monolithic organization, but that, too is a common paranoid delusion that makes no logical sense.

So, the firm basis of my scrap of knowledge is the answers of thousands of people to a question, collated.