Sen. Rick Scott (R-Fla.) holds a 4-point lead over Democrat Debbie Mucarsel-Powell in the Florida Senate race, according to a new poll. An Emerson College Polling/The Hill survey released on Wednesday found Scott ahead of Mucarsel-Powell at 48 percent to 44 percent, with 8 percent undecided. When voters who are undecided are asked which candidate they’re…