Bill McCollum is expected to endorse Connie Mack for U.S. Senate on Monday in Orlando.

UPDATE Monday:

"From his days in the Florida Legislature where he formed and led the Freedom Caucus, to his principled fights in Washington against bailouts, the failed stimulus and ObamaCare, and for common sense ideas like the Penny Plan, Connie Mack has proven himself a tireless conservative leader for the people of Florida and the country.
 
"To turn this country around, cut taxes, restore economic growth, replace ObamaCare and maintain a strong national defense, it is absolutely essential that Barrack Obama be defeated in November, but that alone is not enough. We must elect a Republican majority to the U.S. Senate and keep the House majority. To assure Republicans win a Senate majority, Connie Mack must be elected Florida's next United States Senator.”