Overall, Elizabeth Warren spoke them most, followed by Joe Biden, Pete Buttigieg and Cory Booker.

Via Bloomberg

Candidates were expected to attack Mayor Pete Buttigieg, who is now viewed as the Iowa frontrunner - however the pile-on landed more softly than many had projected, according to Axios.

Via Bloomberg

Joe Biden had numerous gaffes and mid-sentence derailments, 'blowing four tires' according to CNN. Perhaps the most embarrassing of which was when he said that he "came out of the black community" and has the support of the "only bla- African American woman to be elected to Congress," to which candidates Cory Booker and Kamala Harris interjected "that's not true!" with Harris, who is black, saying "the other one is here."