According to Mary Ellen Klas: Professor Kevin Hill and I did an ecological regression of large Cuban precincts in Miami-Dade County and found that the Cuban Americans voted for Romney 58% to 42%. This results includes the over 50,000 Absentee ballots submitted by Cuban-Americans over sixty in Miami-Dade County that were not captured by Fox News and Pew exit polling. This demographic is traditionally the most Republican demographic in Miami-Dade. There was a significant reduction in Cuban American support for the Republican candidate but not as dramatic as the exit poll found.
Read more here: http://miamiherald.typepad.com/nakedpolitics/2012/11/who-really-won-floridas-cuban-vote-analysts-have-conflicting-results.h