Millions of dollars poured into lobbying firms during the first three months of the year, as they sought to sway Florida lawmakers on issues such as gambling and health care, according to newly filed reports.

Four lobbying firms reported earning $1 million or more between Jan. 1 and March 31 for legislative work, while eight others reported earning between $500,000 and $999,999, and 21 reported earning between $250,000 and $499,999. Dozens reported earning smaller amounts.