Florida Gov. and Sen.-elect Rick Scott (R) spent roughly $64 million of his own money on his campaign to unseat Sen. Bill Nelson Clarence (Bill) William NelsonDemocrats sound alarm on possible election chaos Trump, facing trouble in Florida, goes all in NASA names DC headquarters after agency's first Black female engineer Mary W. Jackson MORE (D-Fla.), according to campaign expenditure filings with the Federal Election Commission (FEC).

The incoming senator spent $63.6 million total on the campaign through a series of donations from his personal account. Prior to running for governor, Scott worked as a venture capitalist and as a health care executive.

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Scott's personal contribution to his campaign accounted for roughly three-quarters of his entire fundraising haul of $84.7 million, according to FEC records.

The Tampa Bay Times reported that Scott contributed more than $12 million to his campaign in the closing weeks of his contest with Nelson. Scott's overall spending fell just short of the $70 million he poured into his gubernatorial campaign in 2010, the newspaper reported.

Scott narrowly defeated Nelson last month in a hotly contested Senate race that was not officially decided until more than a week after Election Day. Nelson conceded after a hand recount showed him trailing by about 10,000 votes.

In the days before Nelson's concession, Scott, President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE and some other Republicans had floated unfounded claims that Democrats were attempting to "steal" the election, and that rampant voter fraud had taken place in Broward and Palm Beach counties. Law enforcement found no proof of voter fraud.

Scott announced last week he would not leave the governor's mansion early for the Senate. As a result, he will be sworn in on Jan. 8, five days after other new senators take office in Washington, D.C.