KEY POINTS
  • Bernie Sanders' rivals are expected to try to halt his momentum during the Democratic presidential debate in Charleston on Tuesday night.
  • The debate kicks off at 8 p.m. ET and is expected to last just over two hours. It comes days before the South Carolina primary, the last nominating contest before next week's crucial Super Tuesday.
  • Unless the trajectory of the race changes, Sanders is on track to run away with an unstoppable lead in pledged delegates.
Democratic presidential candidate, Sen. Bernie Sanders (I-VT) speaks to the crowd during the 2019 South Carolina Democratic Party State Convention on June 22, 2019 in Columbia, South Carolina.

Democratic presidential contenders are facing what could be their last chance to halt an ascendant Sen. Bernie Sanders during the presidential debate in South Carolina on Tuesday.

The event in Charleston, hosted by CBS News, is likely to be a rowdy affair.