chamber of conference event. he's neck and neck with ted cruz behind donald trump and ben can carson. we'll see how the latest polling after the debate really potentially shuffles the deck, if at all. rubio here last night in columbia, south carolina, he opened up his first office in the state and really talked about the importance that he sees for this first in the south primary state. here's what he had to say. >> we plan to be here quite often. maybe not in the office every day but in the state because we want to do very well here. we want to be successful. because this election could very well be decided, at least denomination could be decided in the state. >> reporter: now, in the aftermath of the debate this week, much of the focus among the gop candidates has been their distinctions over immigration policy, especially after donald trump says his plans to deport the 11 million undocumented immigrants in the nation by using something he calls a deportation force.