A Chester County, Pa. election worker unwraps mail-in and absentee ballots to be processed at West Chester University, Wednesday, Nov. 4, 2020, in West Chester. The fate of the United States presidency hung in the balance Wednesday morning, as President Donald Trump and Democratic challenger Joe Biden battled for three familiar battleground states, Wisconsin, Michigan and Pennsylvania, that could prove crucial in determining who wins the White House. AP Photo/Matt Slocum
