Florida's Hispanic voters back Obama 56 - 32 percent, compared to 49 - 39 percent in a June 21 Quinnipiac University poll, conducted before Obama and Romney each made major addresses on immigration policy.
The president leads 85 - 6 percent among black voters while white voters back Romney 50 - 35 percent. Obama leads 47 - 40 percent among women, while men are divided with 43 percent for Obama and 42 percent for Romney.
Obama leads 81 - 7 percent among Democrats and 44 - 37 percent among independent voters, losing Republicans 86 - 8 percent.
Voters split 47 - 49 percent in their approval of the job Obama is doing and 46 - 47 percent on whether he deserves four more years.
Florida voters give Obama a split 47 - 47 percent favorability, while Romney gets a negative 37 - 42 percent favorability rating.
Romney would do a better job on the economy, 46 percent of Florida voters say, while 44 percent say Obama would do a better job. Obama would be better for their personal economic future, 46 percent of voters say, compared to 45 percent for Romney.
Florida voters support Obama's immigration initiative 58 - 33 percent and say 46 - 40 percent the president would do a better job on immigration.
Voters disapprove 48 - 35 percent of the job Gov. Rick Scott is doing, continuing a 16- month string of negative ratings.
Florida's U.S. Senate race remains too close to call as Democratic incumbent U.S. Sen. Bill Nelson gets 41 percent to 40 percent for U.S. Rep. Connie Mack, the leading Republican challenger.
"The U.S. Senate race between Bill Nelson and Connie Mack remains a dead heat with 17 percent of voters still undecided, an unusually large number," said Brown.
--ADAM C. SMITH