(CNN) Puerto Rico Gov. Ricardo Rosselló is expected to endorse the two Democratic candidates for statewide office in Florida on Monday at two separate events in the state.

It's a bold political move by Rosselló. As Puerto Rico's governor, he's overseeing the island's recovery efforts from Hurricane Maria, and the federal government -- led by President Donald Trump -- is playing an important role in that process. Trump has lashed out over criticism of the federal government's response, and Rosselló's expected decision to back Democratic Sen. Bill Nelson and Democratic gubernatorial nominee Andrew Gillum has the potential to complicate that relationship even more.

And a new wave voters from Puerto Rico, displaced by the storm, could have a huge impact on the outcome of both races.

Rosselló will first hold an event with Nelson at 10:30 a.m. in Orlando, where Nelson's campaign is teasing a "major announcement." The campaign has not said what that announcement will be and refused to comment directly -- but a source with direct knowledge of the event's plans say an endorsement is expected.

Separately, a second source with knowledge of Rosselló's intentions confirmed that an endorsement is planned.

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