Mr. DAVID KEATING (Club for Growth): It was quite a remarkable display of being willing to sign off on a tax increase.

NPR: Huckabee Attacked for Tax Record

"A lot of donors who were holding back are now going to feel free to give, " said David Keating, executive director of the Club for Growth, a conservative anti-tax organization and one of few Republican-friendly 527s that has been active this campaign.

CNN: FEC turns back?spending limits by independent groups

CNN's David Ariosto, Tom Cohen, Barbara Starr, Keating Holland, Nick Paton Walsh and journalist Masoud Popalzai contributed to this report.

CNN: Obama signals Afghan war's next chapter