U.S. Sen. Bill Nelson, D-Fla., can expect a fight on his hands if Gov. Rick Scott opposes him for a fourth term in 2018, a new poll shows. 

A new poll shows some of the leading Republican candidates running to replace U.S. Sen. Marco Rubio, R-Fla., in 2016 remain unknown to GOP voters across the Sunshine State. 

Less than a year to go until Florida Democrats hold their primary to choose their U.S. Senate candidate to replace U.S. Sen. Marco Rubio, R-Fla., many voters remain undecided, a new poll shows. Currently running for the Republican presidential nomination, Rubio has said he will not run for a second term in the Senate. 

Public Policy Polling (PPP), a firm with connections to prominent Democrats, released a poll on Tuesday which shows a plurality of Democrats -- 39 percent -- in the Sunshine State remain undecided on who to back in the Senate race.