‘There are two things that are important in politics,’ said the 19th century senator Mark Hanna. ‘The first is money and I can’t remember what the second one is.’ The maxim remains true in 2022. Public polling is all well and good, and useful in its way. Yet in a country as sprawling and complex and bitterly divided as the United States of America, and with so much information available online at everyone’s fingertips, polls can easily be used to suggest whatever you want.