He now has $800,000 cash on hand for a race that's already looking to be one of the most contentious in the nation.

Republicans are banking on an investigation into his former campaign staffers, hoping it hurts him at the polls this cycle. Three of his staffers have been implicated in a scheme to illegally request absentee ballots for voters without their permission.

Garcia's district leans Republican, but both he and President Obama won it with solid margins last cycle.

In 2014, however, Garcia will likely face a stronger challenger than the scandal-plagued former Rep. David Rivera (R), who he unseated last cycle. And Republicans have already indicated Garcia is, again, one of their top targets.

Sensing an opportunity, three Republicans have already jumped in the race —  Cutler Bay Mayor Ed MacDougal, former Miami-Dade Commission Chairman Joe Martinez and Miami-Dade School Board Member Carlos Curbelo are all vying for the chance to take on Garcia.

Curbelo released a poll last month, while he was still in the exploratory stages of his bid, that indicated Garcia has been hurt by the scandal. But Garcia's strong fundraising hauls — he pulled in $550,000 in the first quarter — are a show of strong support despite the investigation.