The second Democratic debate will be held at Drake University in Des Moines, Iowa, on Nov. 14. It will air from 9pm to 11pm ET on the CBS Television Network. Pre-debate coverage will begin at 8pm ET.

CBS News is hosting the debate in conjunction with CBS' Des Moines affiliate, KCCI, and the Des Moines Register. "Face the Nation" anchor John Dickerson will be the principal moderator, and he will be joined by CBS News Congressional Correspondent Nancy Cordes, KCCI anchor Kevin Cooney and the Des Moines Register's political columnist, Kathie Obradovich.

With Friday's attacks in Paris, the debate will also focus on foreign policy differences among the candidates and strategies to fight extremist groups abroad.

"Last night's attacks are a tragic example of the kind of challenges American presidents face in today's world and we intend to ask the candidates how they would confront the evolving threat of terrorism," CBS News Washington bureau chief Chris Isham said.

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Candidates have already responded, via social media, to the attacks that have left over 127 people dead and several dozen more injured. While all three have expressed their condolences for the people of Paris, the debate will provide a forum to discuss how the U.S. might prevent such an attack from happening at home.

Hillary Clinton and foreign policy have been driving the conversation on Twitter ahead of the debate. According to Twitter's data, 41 percent of the conversation related to the Democratic debate is focused on foreign policy and 33 percent is connected to national security as a result of the deadly terrorist attacks in Paris on Friday. Clinton has also been the most searched candidate on Saturday on Google.

CBS News will also air a live "48 Hours" primetime special, "Paris Under Attack," tonight at 8 p.m. ET on CBS before the debate.

CBS News is also teaming up with Twitter. CBS News producers, equipped with Twitter's curation tools, will whittle down the millions of tweets about the debate and select some for use on the broadcast. The official hashtag will be #DemDebate. CBS will also be able to formulate questions for the candidates based on real-time Twitter conversations and data, with an eye to bringing to the debate stage the issues viewers are most interested in.

On stage will be former Secretary of State Hillary Clinton, Vermont Sen. Bernie Sanders and former Maryland Gov. Martin O'Malley. Since their last meeting on the debate stage, two of the participants, former Virginia Sen. Jim Webb and former Rhode Island Gov. and Sen. Lincoln Chafee have dropped out of the race.

A CBS News/ New York Times poll released ahead of the debate shows that Clinton enjoys a considerable lead, with support from 52 percent of Democratic primary voters nationally.

Viewers can tune into the debate on their local CBS television affiliate or listen to the debate on CBS Radio News' 600 affiliates, as well as the CBS Radio News digital stream on Radio.com and on its iPhone and Android Apps.