President Biden managed to gain ground on former President Donald Trump in key battleground states and trails by only 2% — even after his disastrous debate performance last week, a new poll shows. Trump, the presumptive Republican presidential nominee, leads Democrat Biden 47% to 45%, in the crucial states needed to win the November election, according to a Bloomberg News/Morning Consult tracking poll released Saturday. It’s the smallest gap since the poll began in October. Although Biden is losing in Pennsylvania, the state where he grew up, he now leads Trump in Michigan and Wisconsin. He’s also within the poll’s...