Washington (CNN) Charlie Crist might be back on the Florida ballot once again.

The former Florida governor, who lost his Republican-turned-Independent bid for Senate in 2010 and then fell short in his comeback attempt as a Democrat in last year's gubernatorial race, is now considering running for Senate in 2016, an adviser to the governor told CNN on Wednesday.

"It's very early, but he's being encouraged to seriously consider bringing the people's voice to the U.S. Senate," Crist adviser Kevin Cate said. "And he always listens closely to Floridians."

Crist has been "making calls" about the Senate race to Democrats and financial supporters in recent weeks, two Florida Democratic sources said.

But Cate's comment is the first on-the-record signal from the Crist orbit that he might mount another statewide bid.

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