Yes there has been minor slippage in some polls. Morris is probably right that momentum stalled due to the hurricane. But polls probably would've "tightened" anyway, just before the election. They always do.
Voter intensity is key. Our side has never lost its intensity! On the other hand, does anyone really believe voters are going to get fired up over Obama NOW ... just because he did a "presidential" photo-op with Christie* and a few hurricane victims (who, by the way, are still suffering terribly, despite Obama's waving his magic wand).
Obama may well find his exploitation of Sandy backfiring over the weekend.
*Oh and speaking of Christie: I come from the place in NJ where Christie got his political start. He was elected to the office of County Freeholder --then booted in the next election because he was such a jerk. President Bush then appointed the failed Freeholder Christie to the post of US attorney. This gave Christie lots of face time on TV, and a chance to look tough. But watch out. Christie is inconsistent in his character, and he is no constitutional conservative.
The incumbent always gets 1-2 points in the last week of the race. That is when the 1/3 of the undecideds that he can expect make up their minds. The rest (2/3) will choose Romney when they are standing over the ballot.