"If Clinton wins the 19 states (and D.C.) that every Democratic nominee has won from 1992 to 2012, she has 242 electoral votes. Add Florida's 29 and you get 271. Game over.
The Republican map [is more difficult] — There are 13 states that have gone for the GOP presidential nominee in each of the last six elections. But they only total 102 electorate votes.That means the eventual nominee has to find, at least, 168 more electoral votes to get to 270.
Via Seth Dixon