The polls also looked at Senate races in Georgia and North Carolina. In Georgia, Republican Sen. David Perdue was one percentage point ahead of Democratic challenger Jon Ossoff (47-46).
Georgia, which is also holding a Senate special election, requires the winner of a Senate race to draw at least 50 percent of the vote or face a runoff election.
In North Carolina, Democratic challenger Cal Cunningham remained ahead of Sen. Thom Tillis by a margin of 49 percent to 43.
These surveys were conducted by YouGov from Oct. 20 to Oct. 23. They are based on samples of 1,243 registered voters in Florida, 1,102 in Georgia, and 1,037 in North Carolina. Margins of error for likely voters are plus or minus 3.6 points in Florida, 3.4 points in Georgia, and 4.1 points in North Carolina.