From Rasmussen comes this today:
The Rasmussen Reports daily Presidential Tracking Poll for Wednesday shows both President Obama and Mitt Romney attracting support from 46% of voters nationwide. Three percent (3%) prefer some other candidate, and five percent (5%) are undecided. See daily tracking history.
When “leaners” are included, it’s Romney 48% and Obama 46%. Leaners are those who are initially uncommitted to the two leading candidates but lean towards one of them when asked a follow-up question.