Bernie Sanders strengthened his front-runner status in the race for the Democratic nomination with a narrow win in New Hampshire, dealing a setback to moderate Joe Biden as attention shifts to the next contests in the state-by-state process.

Pete Buttigieg, the moderate former mayor of South Bend, Indiana, built on his momentum with a close second-place finish after splitting much of the centrist vote with Senator Amy Klobuchar, who placed third after surging over the past few days.

The focus of the campaign to pick a Democrat to challenge Republican President Donald Trump in November begins to shift on Wednesday to states more demographically diverse than the largely white and rural kick-off states of Iowa and New Hampshire.

“This victory here is the beginning of the end for Donald Trump,” Sanders told supporters in Manchester, New Hampshire, late on Tuesday.

Turnout approached the record of 287,000 set in 2008, the year of Barack Obama's historic candidacy, easing Democrats’ concerns about voter engagement after lower-than-expected turnout in Iowa. The next contest is on February 22 in Nevada, where more than one in four residents are Latino, followed a week later by South Carolina.