Tonight’s Democratic Debate: Everyone vs. Bernie Sanders

Photographs by Tony Cenicola, Todd Heisler and Calla Kessler.
Additional work by Gray Beltran, Alicia Parlapiano, Guilbert Gates, Isabella Grullón Paz and Rebecca Lieberman.

Polling data from ABC News/The Washington Post, Reuters, Monmouth University, Quinnipiac University, Fox News, USA Today/Suffolk, University of New Hampshire, CBS News/YouGov, CNN, The Des Moines Register, NBC News/The Wall Street Journal, Winthrop University. Numbers are through Feb. 20.

Polls conducted more recently and polls with a larger sample size are given greater weight in computing the averages. Data is for registered voters or likely voters, depending on the poll.