From the Miami Herald ...

Now things are really heating up! Raul Martinez and state Democrats at a Miami press conference today looked to tie Lincoln Diaz-Balart to Puerto Rican senator Jorge de Castro Font, who was arrested by the FBI.

Dems charge that de Castro Font has "implicated" Diaz-Balart by alleging to "have traveled to Miami with Congressman Luis Fortuño of Puerto Rico to deliver a suitcase full of cash for Diaz-Balart's re-election campaign." The money was allegedly from a prominent PR family.

Diaz-Balart's campaign has called it a "desperate attack" and the congressman told reporters today that he got two checks from the family in 2006 -- totalling about $400.