Romney 49%, Obama 47%.

The new Rasmussen daily presidential tracking poll, an average of the last 3 days, 2 of which were post-debate.

Heading into Wednesday’s showdown, it was the president who enjoyed a two-point advantage. Today is the first time Romney has been ahead by even a single point since mid-September. See daily tracking history....

Both men have solidified their partisan base. Romney is supported by 89% of Republicans and Obama by 88% of Democrats. 

Romney has more support with Republicans than Obama has with Democrats.

Among those not affiliated with either major party, Romney leads by 16.

One might speculate that Obama has more of a problem reaching the middle group. His base will punish him. Romney has more ability to appeal to the middle, because core conservatives will stick with him, since they want Obama out so badly. If Romney can show — and he did at the debate — that he's not the heartless plutocrat in the Democrats' caricatures, people in the middle can feel free to vote for him (especially if they feel — as the debate made them feel — that Obama is worn out and doesn't really want to keep working at the job).