Florida Gov. Rick Scott (R), who just won reelection by a narrow margin in 2014, already has his eyes on the U.S. Senate.

The Tampa Bay Times reported on Wednesday that Scott has told top donors in Florida that he’s interested in running for Senate in 2018, when Sen. Bill NelsonClarence (Bill) William NelsonPoll: 8 in 10 people in key states concerned about driverless cars Ted Cruz and Bill Nelson give NASA a reality check on privatizing International Space Station Overnight Defense: Senate confirms Haspel as CIA chief | Trump offers Kim 'protections' if he gives up nukes | Dem amendments target Trump military parade MORE (D-Fla.) will be up for reelection.

Nelson will be 76 in 2018 and hasn’t said whether he intends to seek a fourth term, although the Tampa Bay Times reports that the Florida Democrat began ramping up his fundraising operations this week.

Scott was reelected to office in 2014, edging former Florida Gov. Charlie Crist by 1 percentage point. He will be completing his second term in office when the Nelson’s Senate seat will be up for grabs.

Scott has, at times, been a controversial figure, most notably for his climate change skepticism. He has also been a fierce critic of the Obama administration on matters like immigration and healthcare reform.