WASHINGTON (CNN) - Fred Thompson's former top fundraiser has signed on with John McCain, the Arizona senator's presidential campaign announced Thursday.
In a statement released by McCain's campaign, Scooter Clippard, Thompson's former national fundraising chairman, hailed McCain for his "commitment to the conservative principles we hold dear."
"For more than two decades, John McCain has taken on the system in Washington, fought to lower taxes, to defend the traditional values that made our nation strong, and to keep our families safe from the enemies of freedom," said Clippard.
Thompson formally bowed out of the White House race Tuesday, following a poor third-place showing in South Carolina - a state where the former Tennessee senator expected to do well. Though he enjoys a close relationship with McCain, Thompson has not endorsed any remaining Republican candidate.
- CNN Ticker Producer Alexander Mooney