NEW : Trump said he previously criticized Rick Santorum before getting to know him . The value of a Donald Trump endorsement of Medicaid is unclear . Rick Santorum agrees with Rick Santorum that Florida delegates should be proportional . Romney 's big lead in Nevada . The Republican candidates are campaigning in Florida , which holds its caucuses Thursday .
NEW : Trump said he previously criticized Rick Santorum before getting to know him . The value of a Donald Trump endorsement of Medicaid is unclear . Rick Santorum agrees with Rick Santorum that Florida delegates should be proportional . The Republican candidates are campaigning in Florida , which holds its caucuses Thursday .