* Vice President Kamala Harris and former President Donald Trump each need at least 270 electoral votes to win the presidency.

* The battleground states of Arizona, Pennsylvania, Michigan, Georgia, Wisconsin, North Carolina and Nevada are seen as pivotal to their path to victory. The first statewide polls are closing at 7 p.m. ET.

* No incumbent or incumbent party has won with these kinds of numbers — 72% of voters say they are dissatisfied or angry about the direction of the country. And Joe Biden’s approval number is just 41%, while 67% call the economy bad or poor.