Given his polling within the GOP, Trump could become the first non-incumbent (neither POTUS nor VP) to win every single contest in a Presidential primary season. Only Smith’28, Roosevelt’32, Goldwater’64, Nixon’68, Reagan’80, Dole’96, Bush’00, and Kerry’04 have gotten close to that feat, with Kerry being the closest by winning all but 4 of the contests, and Gore’00 was the incumbent VP, not POTUS.