There are two things to watch in the elections. The popular vote is the total number of votes a candidate received.
The electoral college vote is required to win for Presidency. It was the compromise between having a President elected by Congress and one by the people. There are 538 electoral college votes, to win, a candidate must receive 270 of those votes.
Electoral college votes are based on the number of Congressional seats a particular state has, plus 3 for the District of Columbia. So every other state gets their number of Representatives, plus 2 for their Senators in electoral college votes.