Baloney. This is a common news meme during the final leg of a long campaign season and the Republicans are going to pick it up and run with it as hard as they can. They are desperate for any thread of hope to dangle in front of their supporters to keep them from sulking at home on election day.
There are something like eight different daily tracking polls out now and they fluctuate continuously. So you can always pick up one of the polls on any day and claim that “the race is tightening”. And then the next day when the same poll shows Obama pulling away again you just ignore it and grab a different poll that is fluctuating the direction you want.