US-POLITICS-VOTE

Voters line up at a polling station to cast their ballots during the presidential primary in Houston, Texas on Super Tuesday, March 3, 2020. Fourteen states and American Samoa are holding presidential primary elections, with over 1400 delegates at stake. Americans vote Tuesday in primaries that play a major role in who will challenge Donald Trump for the presidency, a day after key endorsements dramatically boosted Joe Biden's hopes against surging leftist Bernie Sanders. The backing of Biden by three of his ex-rivals marked an unprecedented turn in a fractured, often bitter campaign. (Photo by Mark Felix / AFP) (Photo by MARK FELIX/AFP via Getty Images)