March 8-11, 2016, (Tu-F), Florida Atlantic University poll. 852 registered Florida likely Republican primary voters, land line and cell phone, automated voice response, 3.3 error margin, random selection of registered voters. Likely primary voters were classified through a screening question. Trump also leads among Florida Hispanic voters by 2+ points: (page 3), Trump 36.9, Rubio 34.5, Cruz 20.5, Kasich 8.1. (Jeb Bush was at 10 statewide in Jan. 2016 FAU poll.)
March 12, 2016, "Latest FAU Poll Shows Trump Up 23 Points on Cruz and Rubio in Florida, where Clinton leads Sanders by 28," press release, Florida Atlantic University
FAU website: "Polls," Florida Atlantic University College of Business
"A new Florida Atlantic University statewide poll has GOP front runner
Donald Trump surging with the support of 44% of likely Republican
primary voters, and an overall 23 point lead on his closest competitors
Ted Cruz and Marco Rubio who are statistically tied at 21%."...image above from Florida Atlantic University website.