Joseph Kyrillos, who chaired Gov. Chris Christie’s 2009 gubernatorial campaign and ushered his agenda through a Democratic-controlled legislature, is backing Jeb Bush in the GOP presidential race with a $10,000 donation, according to the Washington Post.

“The defection of Kyrillos to Bush’s camp is a blow to Christie, who places a premium on loyalty and had hoped to keep his network of allies in New Jersey with him, should he decide to seek the Republican nomination.”