Democratic Sen. Bill Nelson leads current Republican Florida Gov. Rick Scott by 1 point in a potential 2018 matchup.
Nelson beat Scott 37 to 36 percent, which is within the University of North Florida poll's margin of error. Twenty percent of registered voters said they are undecided.
"Like most statewide races in Florida, the senate race between Nelson and Scott is going to be too close to call all the way until Election Day," said Michael Binder, faculty director of the Public Opinion Research Lab at UNF. He cited Nelson's lack of public exposure as a potential issue, with 49 percent of respondents not being able to assess his job performance. Nelson has been in the Senate since 2001 and previously in served in the House.
Scott has yet to say whether he is running. Nelson would be running for his fourth Senate term.
The poll was conducted from Oct. 11 to 17 and surveyed 838 registered voters in the state.