Twelve Democratic candidates will take the stage in Westerville, Ohio, tonight for a 2020 presidential debate. Heading into tonight, a number of new polls show Massachusetts Senator Elizabeth Warren leading the pack, after surging ahead of former Vice President Joe Biden. News reports say former New York City Mayor Mike Bloomberg is reportedly considering jumping into the Democratic primary race if Joe Biden withdraws. The CNN/New York Times-hosted debate will begin at 8 p.m. Eastern Standard Time.