Vermont Senator Bernie Sanders has narrowly won the New Hampshire Democratic primary, as moderate voters split their voters between other candidates.Former South Bend, Ind., mayor Pete Buttigieg and Minnesota Senator Amy Klobuchar both had strong showings in New Hampshire. The state's electorate is considerably older and whiter than that of the nearly all of the remaining contests. Despite this result, both candidates face an uphill climb to the nomination because of a dearth of support from voters of color.Former Vice President Joe Biden and Massachusetts Senator Elizabeth Warren both under-performed expectations. Neither secured any delegates in the state, with their vote totals falling below the necessary 15 percent threshold.This episode: congressional correspondent Susan Davis and campaign correspondents Asma Khalid and Scott Detrow.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.org.Join the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.