What's happened to Warren, Biden? Dismal showings and questions about the future.

MANCHESTER, N.H — Joe Biden's and Elizabeth Warren's poor finishes in New Hampshire raise daunting questions about the future of their campaigns after both former front-runners were denied podium positions by a late-surging Amy Klobuchar.

Biden appears set to finish fifth and Warren fourth — a stunning result for two candidates who were neck and neck for national front-runner status as recently as October — and NBC News projected Tuesday that neither of them would meet the threshold to collect any delegates.

Klobuchar impressed at the last debate and a...