Election officials scramble to count ballots in key states Workers prepare mail-in ballots for counting, Wednesday, Nov. 4, 2020, at the convention center in Lancaster, Pa., following Tuesday's election. (AP Photo/Julio Cortez)
Election challengers observe as ballots are counted at the central counting board, Wednesday, Nov. 4, 2020, in Detroit. (AP Photo/Carlos Osorio)
A worker opens a mail-in ballot to prepare it for counting, Wednesday, Nov. 4, 2020, at the convention center in Lancaster, Pa., following Tuesday's election. (AP Photo/Julio Cortez)
A worker scans mail-in ballots through a counting machine before they are counted, Wednesday, Nov. 4, 2020, at the convention center in Lancaster, Pa., following Tuesday's election. (AP Photo/Julio Cortez)
A worker opens a mail-in ballots to prepare them for counting, Wednesday, Nov. 4, 2020, at the convention center in Lancaster, Pa., following Tuesday's election. (AP Photo/Julio Cortez)
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Workers prepare mail-in ballots for counting, Wednesday, Nov. 4, 2020, at the convention center in Lancaster, Pa., following Tuesday's election. (AP Photo/Julio Cortez)