The Oct. 15 debate ushered in a new phase of the race, one in which Elizabeth Warren became the woman to beat, Pete Buttigieg showed his chutzpah and Joe Biden slipped into irrelevance.

While less chaotic than the previous debates, Thursday night did not disappoint on delivering catchy one liners, cat fights and some extremely powerful statements.

If Democrats want to win back the White House, their presidential candidates need to learn from the last time around and not allow campaigning and rhetoric to get as ugly and intense as it did in 2016.