From an article by 365gay.com posted today:

"The Cuban-exile vote is considered key to winning Florida, and top presidential candidates have generally followed the recommendations of the community's most hard-line and vocal leaders, who support a full embargo against Castro's government.... Obama said he wouldn't lift the current trade embargo, and said his offer to normalize relations in a post-Castro Cuba would be made after the country opened up to democratic change."

Link to the full article is below.