Lawmakers in both parties are bracing themselves for a messy aftermath to Election Day as polls show the race between former President Trump and Vice President Harris is so close in several battleground states that it could take days to determine the winner. Democratic senators say they fear Trump and his allies will seize on any initial uncertainty over the results to claim election fraud if Harris is projected the early winner. Some lawmakers are already girding themselves for another battle on the Senate and House floors over certifying the election if Harris is declared the winner. Though Congress passed...