The fate of casino gambling is just one of four ballot questions being put to Massachusetts voters.

The questions - which also touch on expanding the state’s bottle deposit law, repealing a measure related to the gas tax, and allowing workers to accrue sick time - are getting almost as much attention as top political races.

Casinos and other supporters of expanded gambling have raised nearly $12 million to defend the 2011 law, which allows Massachusetts to license up to three casinos and a single slots parlor. They say the law will create jobs and be a boon to the economy.

Support for GBH is provided by:

Critics have argued that casinos harm local economies, prey on those who can least afford to gamble away their money, and lead to gambling addiction.

Polls open at 7 a.m. Tuesday.