President Joe Biden has a new problem cropping up in polling data: more Americans now dismiss even the possibility of voting for him. Among likely voters living in six key swing states, 51% say there’s “not really any chance” they’d vote for Biden, compared to just 46% saying the same thing about former President Donald Trump, according to a May poll conducted by The New York Times and Siena College. The trend of more voters vowing never to vote for Biden than Trump extends beyond just one poll, with three polls stretching between November 2023 and April all finding more never-Biden voters tha…