Rather, he uses a system of true/false statements he calls the "Keys to the White House" to determine his predicted winner. Contest: There is no serious contest for the incumbent party nomination. Incumbency: The incumbent party candidate is the sitting president. Incumbent charisma: The incumbent party candidate is charismatic or a national hero. Challenger charisma: The challenging party candidate is not charismatic or a national hero.

Source: Washington Post September 23, 2016 12:03 UTC