More than $6.6 million was spent to collect signatures for the six initiatives voters will likely decide in November.
The state Public Disclosure Commission released its report on initiative spending Friday.
Of the six initiatives, four have already been officially qualified for the ballot. Verification of signatures on the remaining two should be wrapped up by early next week.
The initiatives would roll back new tax hikes on pop, candy and other products; require a two-thirds majority vote of the Legislature or voter approval to raise taxes; privatize the state government monopoly on liquor sales and distribution; impose an income tax on the state's wealthiest residents; and allow private workers' comp insurance.