Mack Feldman, 25

If Donald Trump hadn’t come along and completely up-ended politics, Mack Feldman’s career trajectory might be on a different arc. He was part of Jeb Bush’s policy team during the 2016 election cycle, which saw the former Florida governor’s campaign (and many others) get completely derailed by the Trump phenomenon.

Feldman, the son of Feldman Equities LLC chairman and CEO Larry Feldman, was willing to do whatever it took to help the Bush team win. He says he went from reading reports to the candidate himself to knocking on doors and making cold calls for a month in Iowa.