US presidential candidates face off for their final debate this evening, and Sun News Network will be bringing you live coverage. Democratic President Barack Obama and Republican presidential nominee Mitt Romney go head-to-head at Lynn University in South Florida for their third in a series of debates leading up to the November 6th election.

The theme of this evening's debate will be foreign policy - a topic which has not yet been the focus, but has come up in every previous presidential and vice-presidential debate. The deaths of US Ambassador to Libya Christopher Stevens and three other Americans will almost certainly come up, giving Obama the opportunity to defend himself and Romney the chance to call the government out.

The Obama administration reportedly had information leading up to the events in Libya which may have helped prevent the deaths. The attacks were carried out by men connected with al-Qaeda. A contentious issue in the second presidential debate was whether or not Obama declared the attack an "act of terror" within days or weeks of it happening.

The disagreement between candidates on this issue prompted the debate moderator, CNN's Candy Crowley, to step in and side with Obama in a move that has been widely criticized by pundits across the spectrum.

As Election Day nears closer, a Gallup poll shows Romney has opened a persistent and significant lead in the race against Obama. Romney leads by seven points among likely voters, 52-45, and also leads by three points among registered voters.

With close polls and varied predictions in the lead-up to E-Day, all eyes will be on the candidates tonight as the world wonders who will be the next President of the United States.

Sun is your source for American politics.

Our coverage starts at 8:00PM ET. Tune in for updates, sharp commentary and live coverage of the debate.