A poll released Thursday showed former president Donald Trump leading President Joe Biden in seven swing states, in the latest alarm bell for the incumbent president in polling. Respondents in Arizona, Georgia, Michigan, Nevada, North Carolina, Pennsylvania, and Wisconsin told pollsters in a survey from Morning Consult and Bloomberg that they would choose Trump over Biden on a ballot where the two appear, along with expected third-party candidates such as Robert F. Kennedy Jr. and Cornel West. On that ballot, Trump's smallest lead was in Pennsylvania, where the gap between him and Biden was 1 point, and his largest lead...