Clinton now faces struggle to win back younger voters

FORT COLLINS, Colo. (AP) — Standing in a line of thousands outside an arena at Colorado State University, Aleksandr Cronk contemplated the grim possibility that the man he was waiting to see, Bernie Sanders, may not make it to the November ballot and he'd have to decide whether to vote for Hillary Clinton.

Like millions of young voters nationwide, Cronk has been electrified by Sanders' longshot bid for the Democratic presidential nomination. Even as Clinton has racked up a commanding lead in the contest, she's overwhelmingly losing voters between ages 18 and 29 in early-voting states. Her lukewarm reception among people like Cronk points to a challenge for her in November, should she win the nomination. Overwhelming support from young voters twice helped secure the White House for Barack Obama.