A new Mason-Dixon poll in Florida finds Jeb Bush holds a commanding lead over Sen. Marco Rubio among registered Florida Republicans, 28% to 16%, who have soured on the senator since he announced his presidential bid in April.
“Rubio’s 15 percentage-point drop coincides with the rise of Gov. Scott Walker, who’s now in third place with 13 percent – an 11 point increase for the Wisconsin governor since the April survey.”

