University of Miami students surveyed 720 Cuban-Americans at randomly chosen Miami-Dade County polling places during early voting and on Election Day. More than 1,750 non-Cuban voters also were interviewed.
The university's Institute for Cuban and Cuban-American Studies published the poll results Friday.
About 56 percent of the Cuban-American voters supported keeping or tightening the embargo, while 43 percent would loosen it.
The poll also shows 52 percent of the Cuban-American voters supported U.S. travel restrictions to the communist island, compared with 47 percent who would make travel there easier.