Vermont Sen. Bernie Sanders is hoping to declare the sort of decisive victory that could turn the entire Democratic presidential primary in his favor Tuesday in New Hampshire.

Former South Bend, Indiana, Mayor Pete Buttigieg aims to stop him and force another close tally after their near-tie in the Iowa caucuses eight days ago.
Former Vice President Joe Biden is just looking to avoid disaster, while Minnesota Sen. Amy Klobuchar looks to leapfrog him and emerge as a surprise contender as the campaign moves to Nevada. Massachusetts Sen. Elizabeth Warren, meanwhile, needs a strong showing in her neighboring state to generate the sense of momentum her campaign has lacked in recent weeks.