Democratic candidates line up for final debate before Iowa caucuses

  • Buildup has been marked by Sanders-Warren tensions
  • Debate expected to center on electability and factionalism

Democrats on Tuesday night will kick off a final debate just three weeks before voters in Iowa cast the first ballots in the party’s 2020 nomination contest amid increasing infighting between candidates as the party searches for a champion to take on Donald Trump.

The sense from Democrats on the ground in Iowa is that despite the most recent polls showing former vice-president Joe Biden leading the field, the escalating feuds between senators Bernie Sanders and Elizabeth Warren or Biden and the former South Bend mayor Pete Buttigieg could upend the race.

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