With six weeks left in the legislative session, good-government advocates want to empower the state comptroller’s office to prevention corruption in state contracting — months after the arrests of a former aide to Governor Cuomo on charges of bid rigging and bribery.

“The time to act is now,” said Ron Deutsch of the left-leaning Fiscal Policy Institute. “We have a trial that’s coming up I believe in October that’s going to air all of this dirty laundry again.”

Government reform groups on Wednesday reiterated their push to have Comptroller Tom DiNapoli’s office be re-empowered to review state contracts for major economic development programs — a power he lost in 2011.

“We’ve all seen the indictments, we’ve all seen the mounting evidence and we know that something is wrong here,” said Jennifer Wilson of the League of Women Voters. “Millions of taxpayers dollars have been wasted on one of the largest bid rigging schemes in state history and we need the Legislature to act so this does not happen again.”

Lawmakers meanwhile this week said it’s possible a reform bill could be voted on by the end of June, but it’s not clear if will be the version backed by Deputy Majority Leader John DeFrancisco.

“I expect that we’ll have procurement reform before the end of the session,” said Majority Leader John Flanagan. “Whether it’s Senator DeFrancisco’s bill or a variation of his bill, I expect that we’ll move in that direction.”

Cuomo says he opposes that bill, backing a measure that allows him to appoint an inspector general.

“The problem is not an audit problem,” Cuomo said. “The problem has been a criminal violation problem.”

But ethics groups say that doesn’t go far enough.

“Prevention makes more sense than trying to stop crime after it happens,” said John Kaehny of Reinvent Albany. “Banks don’t keep their money in an unlocked vault or in a table in the lobby. They keep it in a locked vault.”