A lawsuit may be needed to decide whether Colorado's 17-year-olds can really vote By Saja Hindi Lakewood High School junior Spencer Wilcox is 16 and, unlike a lot of kids his age, is very invested in politics. He’s the president of the Colorado High School Democrats, and has worked on voter registration drives and educational campaigns to get more young people involved. Wilcox has been looking forward to participating in the Democratic caucuses ahead of the June 2022 primaries, thanks to a 2019 Colorado law that lets 17-year-olds do that and vote in state and presidential primaries if they’ll be 18 by the time the general election comes around.