Each state gets a number of electors that is equal to the total Senators and House of Representatives from that state.
A candidate needs 270 votes to win in the Electoral College.
Elected officials at the federal level are not eligible to be Electors (people who vote in the Electoral College).
Nebraska and Maine award votes by congressional district vote totals. They can divide their Electoral votes, and are not "winner-take-all." For example, if Trump wins the overall vote in Nebraska, he gets 2 votes. If Clinton can win 1 of the 3 districts within Nebraska, and Romney wins the other 2 districts, then Trump would get 4 electoral votes, and Clinton would get one electoral vote.
-The Fun Facts-
It is 100% possible for a candidate to win an election by securing only the votes of the 11 largest states.
More than 150 "faithless" electors have decided not to vote for the candidate that they pledged to elect.
We have had 18 presidents who have been elected by majority in the Electoral College who did NOT receive at least 50 percent of the popular vote.
More than half of the states have laws that punish an elector who is "faithless." However, these punishments have never been enforced, and the punishments are as little as a $500 fine.
The Electoral College Map
The map below shows how many representatives each state (plus Washington D.C.) has allocated in the Electoral College process.