A Florida International University [FIU] poll conducted between July 11, 2016, and Aug. 12, 2016, of 1,000 Cuban-American residents of Miami-Dade County: “Respondents were asked how well they thought the U.S. embargo of Cuba was working. An overwhelming majority, 81%, expressed the view that the embargo was ‘not working at all’ or ‘not very well.'”
Florida International University, “2016 FIU Cuba Poll: How Cuban Americans in Miami View U.S. Policies Toward Cuba,” CRI.FIU.edu, between July 11, 2016, and Aug. 12, 2016