bird. kind of a strange thing in my view because you see i'm focused on helping the american people get good jobs. >> reporter: sesame's street now asked the obama campaign to pull the big bird ad, yet there are weightier questions here as congress looks in to whether the u.s. was warned of the deadly libya attack. >> twice in the six month lead up, you had bombings at our compound there in benghazi and it's 9/11 in libya. what other warnings do you need? >> reporter: warnings of trouble now for president obama, romney's closing the gap. the latest polls, reuters has them tied. gallup has romney up by two. pew has him up by four. and we were talking about the polls in the balgtd ground states. it also now looks like according to other polls that pennsylvania and michigan may no longer be safe bets for the president. lynn. >> all right, thanks. last night on the rachel maddow show, nate silver talks about just how close the candidates are in the polls. >> the whole good month that obama had in september between the convention and the 47% tape,