In these presidential debates, the leader in the polls tends to get more speaking time. In October’s debate it was Elizabeth Warren. In September it was Joe Biden. In November, despite Pete Buttigieg’s Iowa surge, it was Warren again.
This graphic was produced in collaboration with The Washington Post. See what they're tracking for the fifth Democratic debate.
Read the NBC News liveblog for the latest news and analysis from the fifth Democratic debate and see our graphic of debate-night attacks among candidates.