On October 19, CNN/ORC released a poll for the Florida presidential race. See here; scroll down to question 3, which includes five presidential candidates.

Among registered voters, the results are: Obama 49%, Romney 42%, Johnson 3%, Goode 1%, Stein 1%. Among likely voters, the results are: Romney 48%, Obama 47%, Johnson 2%, Goode 1%, Stein under 1%. Thanks to Mike for the link.