You can watch all the candidates on Unofficial but you have to vote on the X Games website HERE:
“Real Ski, the all-urban, all-video freeski contest brought to you by the World of X Games, is back for another year. There are two components to this event: First, a panel of industry experts will decide which of these videos deserves the X Games gold, silver and bronze medals. But they’re not the final word. That part is decided by you. This Fan Favorite vote is a one-round, winner-take-all cage match.  Fan Favorite voting ends Sunday, Feb. 25, at 11:59 p.m. PT.”