Former Romney Finance Co-Chair Backs Rubio

Rubio also picked up another congressional endorsement.

"Michigan businessman John Rakolta, who served as a national finance co-chairman on Mitt Romney's 2012 campaign, endorsed" Sen. Marco Rubio (R-FL) on Monday. Rakolta is "the third significant Romney backer to get behind Rubio in recent weeks, following in the footsteps of billionaire hedge fund magnate Paul Singer and Idaho billionaire Frank VanderSloot." Rakolta "is helping to organize a Dec. 9 fundraiser for Rubio in Bloomfield Hills, Mich." (Politico)

In addition, Rep. Rep. Bill Huizenga (R-MI) endorsed Rubio and will co-chair his Michigan campaign. (Detroit News)

NEW HAMPSHIRE. Franklin Mayor Ken Merrifield (R) endorsed Rubio on Monday. (WMUR-TV)

TENNESSEE. Rubio's Tennessee campaign "has assembled a full slate of 82 delegates to stand to represent the candidate at the Republican National Convention next year." The list includes former Rep. Zach Wamp (R) and state House Majority Leader Gerald McCormick (R). (AP)