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Election 2020 Primaries in TurmoilFILE – In this March 18, 2020, file photo early voters cast their ballots at the Frank P. Zeidler Municipal Building in Milwaukee, Wis. U.S. elections have been upended by the coronavirus pandemic. At least 13 states have postponed voting and more delays are possible as health officials warn that social distancing and other measures to contain the virus might be in place for weeks, if not months. (AP Photo/Morry Gash, File)

ATLANTA (AP) — U.S. elections have been upended by the coronavirus pandemic. At least 13 states have postponed voting and more delays are possible as health officials warn that social distancing and other measures to contain the virus might be in place for weeks, if