NH poses a last chance for some struggling 2020 Democrats

Democratic presidential candidate former Massachusetts Gov. Deval Patrick speaks during the McIntyre-Shaheen 100 Club Dinner, Saturday, Feb. 8, 2020, in Manchester, N.H. (AP Photo/Mary Altaffer)

Democratic presidential candidate Rep. Tulsi Gabbard, D-Hawaii, speaks during the McIntyre-Shaheen 100 Club Dinner, Saturday, Feb. 8, 2020, in Manchester, N.H. (AP Photo/Mary Altaffer)

Democratic presidential candidate Sen. Michael Bennet, D-Colo., arrives for a campaign stop at the Spotlight Room at the Palace, Saturday, Feb. 8, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)

Democratic presidential candidate Tom Steyer arrives to speak at "Our Rights, Our Courts" forum New Hampshire Technical Institute's Concord Community College, Saturday, Feb. 8, 2020, in Concord, N.H. (AP Photo/Andrew Harnik)

Democratic presidential candidate Andrew Yang takes a photograph with a member of the audience as he arrives at "Our Rights, Our Courts" forum New Hampshire Technical Institute's Concord Community College, Saturday, Feb. 8, 2020, in Concord, N.H. (AP Photo/Andrew Harnik)

PLYMOUTH, N.H. — Bounding onto a stage at a conference center in New Hampshire, tech entrepreneur Andrew Yang beamed a smile to a cheering crowd and launched into his pitch for votes heading into Tuesday’s first-in-the nation primary.