The Rhode Island Senate is set to vote on gay marriage Wednesday.

Advocates say they expect the measure to pass, though traditional marriage supporters aren't giving up the fight.

"Culture may change, but God has an immutable character," state Sen. Harold Metts, D-Providence, said.

The Roman Catholic Bishop of Providence says a religious exemption doesn't protect those who oppose gay marriage because of their faith.

The measure has the governor's support and has already been approved by the state House.

If it passes, Rhode Island will be become the 10th state allowing gays and lesbians to marry.