What is the Electoral College and how does the US use it to elect presidents? FILE - The certification of Electoral College votes for the state of Arizona is unsealed during a joint session of the House and Senate convenes to confirm the electoral votes cast in November's election, at the Capitol, Jan 6, 2021. (AP Photo/Andrew Harnik, File)
FILE - Vice President Mike Pence and Speaker of the House Nancy Pelosi, D-Calif., officiate as a joint session of the House and Senate convenes to count the Electoral College votes cast in the presidential election, at the Capitol in Washington, Jan. 6, 2021. (AP Photo/J. Scott Applewhite, File)
FILE - Boxes containing Electoral College votes are opened as a joint session of the House and Senate convenes to confirm the electoral votes cast in November's election, at the Capitol, Jan 6, 2021. (AP Photo/Andrew Harnik, File)
FILE - Senate pages carry boxes containing Electoral College votes into a joint session of the House and Senate convenes to count the electoral votes cast in November's election, at the Capitol, Wednesday, Jan 6, 2021. (AP Photo/Andrew Harnik, File)
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FILE - The certification of Electoral College votes for the state of Arizona is unsealed during a joint session of the House and Senate convenes to confirm the electoral votes cast in November's election, at the Capitol, Jan 6, 2021. (AP Photo/Andrew Harnik, File)