Nov. 15-16, 2015. 297 likely Florida Registered Republican primary voters. Error margin 5.6.
11/18/15, "Florida Atlantic University Poll: Trump Laps Field in Florida GOP Primary, Clinton Dominates in Dem Primary," Florida Atlantic University, Jim Hellegaard
"The Florida Atlantic University poll was conducted from Sunday November 15 at 1pm through Monday November 16. The polling sample was a random selection of registered voters purchased through Aristotle Inc. Likely primary voters
were classified through a screening question. For non-completes with a
working residential phone line, at least five callbacks were attempted
(Sunday afternoon, Sunday evening, Monday morning, Monday afternoon and
Monday Evening). The Democratic and GOP primaries consisted of 297 and 355 adult registered likely primary voters in Florida, with a margin of error of +/-5.6 percent
and +/-5.2 percent respectively. An overall sample of 829 registered
voters with a+/-3.3 percent, at a 95 percent confidence level was used
for the additional statewide questions. Data was collected using an
Interactive Voice Response system and weighted based on race, age,
gender and region to reflect likely voter populations in Florida. The
full methodology and results can be found at BEPI-polls."...
The poll found that the top 5 Republicans all beat Hillary Clinton in head to head match-ups. (p. 3)
11/18/15, "Poll: Trump surges ahead in Florida," Florida Sun-Sentinel, William E. Gibson
"The survey was conducted in Florida Nov. 15-16, immediately after the
Nov. 14 Democratic debate and in the wake of terrorist attacks in Paris.
The poll did not include questions about national security or
terrorism. Wagner said the 2016 elections most likely will be decided on
economic and other domestic issues."...