The second Democratic Presidential Debate 2015 takes place on Saturday night and this time Hillary Clinton and the leading Democratic candidates will face off at Drake University in Des Moines, Iowa. The debate will start from 9 p.m. ET and continue through to 11 p.m. ET, and can be watched on TV on the CBS network or online through live stream via the link below.

Tonight's debate is being hosted by CBS, the Des Moines Register as well as CBS affiliate KCCI.

The task to moderate tonight's debate has been handed to "Face the Nation" anchor John Dickerson, 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.

It is expected that foreign policy could take over the central theme of the debate tonight following the terror attacks in Paris on Friday. Candidates are expected to be questioned on how they would fight extremist groups such as ISIS and al Qaeda, and their strategies to keep America safe.

CBS News Washington bureau chief, Chris Isham has said, "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."

The terrorist attacks in Paris on Friday killed at least 127 people and injured hundreds more.

Twitter has revealed that of tweets focused on tonight's Democratic presidential debate, 41 percent of them focused on foreign policy, and 33 percent focused on national security.

Tonight's second Democratic Presidential Debate 2015 has a scheduled start time of 9 p.m. ET and can be watched on TV on the CBS network or online through CBS live stream by clicking here.