(Richmond, Va.) (AP) — Virginia is on the verge of expanding Medicaid after years of partisan battle.

The GOP-controlled General Assembly is set to pass a state budget Wednesday that’s expected to expand Medicaid eligibility to about 400,000 low-income adults.

The vote comes after anti-expansion Republican senators failed Tuesday to block expansion in a last-ditch parliamentary effort.

After a Senate committee made up of mostly anti-expansion Republican lawmakers rejected amendments to expand Medicaid, Senate Majority Leader Tommy Norment tried to get the panel to reject them a second time.

The move could have blocked pro-expansion lawmakers from reviving the amendments during a full Senate floor vote, where they have a majority. No measure can be reconsidered more than once during a General Assembly session under Senate rules.

Norment’s motion brought audible gasps from the audience once it was clear what he was trying to accomplish. But after a few moments of confusion, the panel’s chairman, Republican Sen. Emmett Hanger, ruled Norment’s motion out of order and quickly adjourned. Hanger is one of two Republican senators who publicly support Medicaid expansion.

Hanger said he wasn’t sure if Norment’s motion would have effectively blocked a full vote on Medicaid expansion but didn’t want to take any chances.

The House has already passed Medicaid expansion and Democratic Gov. Ralph Northam is a strong proponent.

Wednesday’s vote will mark the end of a more than four-year battle over expanding the publicly funded health care program for the poor in Virginia. The fight led to a standoff over the state budget in 2014 and again this year.