The town hall comes as Hillary Clinton and Bernie Sanders are neck and neck in the polls.
The three Democratic candidates will have a chance to appear before Iowa voters a week before the state’s caucuses.
The announcement came amid speculation that the former Maryland governor might not secure a spot on stage.
Despite a few dust-ups over ISIS and Wall Street, there’s much more consensus among Democrats than Republicans.
The three Democratic candidates will face off in New Hampshire on Saturday at 8 p.m. ET.
Democrats calls for stricter gun laws and Republicans offered prayers to victims and their families.
Sanders slammed Clinton for taking money from Wall Street, calling it “the major donor” to her political career.
The conversation during the first 30 minutes of the two-hour debate was focused on ISIS and the Middle East.
At Saturday’s CBS News debate, each candidate will try to prove he or she is the most pro-immigration.
The "Face the Nation" host promises to focus on the middle class.
Democratic candidates Hillary Clinton, Bernie Sanders and Martin O'Malley will face off in Iowa at 9 p.m. ET.
The Democratic presidential candidate wants to overturn a 2005 law that grants immunity to gun dealers and manufacturers.
He said he was forced out of the race because he didn't score high enough in polls to earn a spot in the debates.
Many of the 20 presidential candidates joined in on the social media conversation.
The event will focus on income inequality and place the New York City leader on the national stage.
CNN would allow vice president to take part even if he declares his campaign the day of the event.
The former Maryland governor aims to cut in half deaths from gun violence within 10 years.
O'Malley called on the U.S. to answer the International Rescue Committee's plea to accept 65,000 refugees.
Democratic candidates are talking police, prison and criminal reform. Not so the Republicans.
The then-Baltimore Mayor pitched in to help New Orleans.