and no one knows this story better than our robin oakley, who is going to join us right now.u just start off helping our viewers understand why is it that now things are so tight in that election? >> reporter: because the british public has been yearning for change after a corrupt parliament which was dominated by mps' expenses scandals. they were look for change. they weren't quite convinced, many of them, that david cameron, the leader of the main opposition conservative party, was quite what they were looking for, and suddenly we have the first round of tv leadership debates in the british election ever between gordon brown, the prime minister, david cameron, and nick clegg, the leader of the liberal democrats and he was undoubtedly the star of the first two debates. normally he gets howled down in the house of commons because there aren't so liberal democrat mps. he came through in the first two debates and people began to say, oh, maybe this is the change we want. and it's become as you were explaining a three-horse race. >> and, robin, you know, in the united states we