Right to Rise, the super-PAC supporting Jeb Bush’s presidential campaign, reported on Sunday raising $15.1 million in the second half of 2015.
Almost two-thirds of the committee's second-half funds came from a single contribution. A company owned by Hank Greenberg -- former head of American Insurance Group -- gave $10 million in October.
In the fourth quarter of the year alone, the committee spent over $54 million to promote Bush, who has a RealClearPolitics polling average of 4.8 percent nationally.
Right to Rise has also targeted Sen. Marco RubioMarco RubioPoll: Rubio holds massive lead in primary Rubio: Turkey attack 'directed' by ISIS Trump: Rivals who don't back me shouldn't be allowed to run for office MORE (R-Fla.), Bush's GOP rival, who has risen to the top of the so-called establishment candidate lane, yet still trails behind Sen. Ted CruzTed CruzThe Trail 2016: Meet and greet and grief Trump to meet with Senate GOP next week Trump camp eyeing Mike Pence for VP: report MORE (R-Texas) and front-runner Donald TrumpDonald TrumpTrump: 'I’m just flabbergasted’ by Clinton-Lynch meet Trump's new digital strategist quickly leaves campaign GOP megadonor compares Trump to Biblical figures MORE.
And despite the committee’s high spending and diminished fundraising, it entered 2016 with $58.6 million on hand.