CBS' breakdown of Crist v. Rubio includes this blurb.
Asked if he would welcome the support of former GOP vice presidential candidate and Alaska governor Sarah Palin, Rubio offers an unqualified yes, adding that "I can't think of anything her and I disagree with off the top of my head."
Also, of note: Crist's brand new communications director, Andrea Saul, going hard after Rubio's record.
[She cited Rubio's] "excessive spending following his election as speaker, support for tax increases, limitations on the 2nd amendment, lack of leadership on immigration reform, [and] political favors for key supporters."