Candidate's lone primary victory in American Samoa, beating even local-born Tulsi Gabbard, was an unorthodox and inauspicious culmination to a much-hyped but short-lived campaign
Former NYC mayor who spent hundreds of millions on unprecedented ad campaign quits after dismal showing in primaries, as race effectively whittled down to Biden versus Sanders
Move comes after billionaire spent unprecedented sums of money in TV ads that got him nowhere on Super Tuesday, though he is still buying new ads and scheduling campaign events
Vermont senator also claims home state, Utah and Colorado; former VP takes Virginia, North Carolina, Oklahoma, Massachusetts, Alabama, Tennessee and Arkansas; no wins for Warren
Sanders grabs a home-state win in Vermont; voting ongoing in the two biggest prizes of the night, Texas and California; Tennessee voting extended after tornadoes
Former US vice president hopes to turn South Carolina victory into national movement, but also faces challenge by Michael Bloomberg, who is testing his strength for the first time
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