5. The 12th amendment requires each of the electors to vote for president and vice president.
6. In four elections, the Electoral College has elected the candidate who did not win the popular vote, 1824, 1876, 1888 and 2000. In all four of those cases, the Democratic candidate was on the losing side of the electoral vote. It is expected to happen again with this election since Hillary Clinton won the popular vote, but Donald Trump is expected to win the electoral vote.
7. No elector is required by federal law to honor their pledge, but some state laws do require them to. Ohio is one of the states that requires the electors to vote for the winner of the state's popular vote, which means Trump is expected to receive all 18 of Ohio's electoral votes. Twenty-nine states and D.C. have laws that punish "faithless electors." However they have never been enforced. Some states such as Michigan void votes by faithless electors. Faithless electors have never changed the outcome of an election.
8. If no candidate receives a majority of electoral votes, the House of Representatives chooses the president, but each state delegation gets two votes. The vote is not based on population. If no candidate gets a majority of votes for vice president, the Senate makes the choice with each senator getting one vote.
9. Donald Trump should receive 306 electoral votes based of of his state wins on Nov. 8. He would need to lose 36 of his electors to lose his majority.
10. In the last 100 years, there's only been three elections where a candidate received more than 500 electoral votes — Franklin Roosevelt in 1936 (523), Richard Nixon in 1972 (520) and Ronald Reagan in 1984 (525).