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After months of delay and backroom disputes, state lawmakers are expected to finally begin voting next week on legalizing marijuana for adults over age 21 in New Jersey.

And it's getting the fast-track treatment, even though legislative leaders and Gov. Phil Murphy remain at odds over details of the legislation.

Separate state Assembly and Senate committees will meet together for a hearing of debate and are expected to vote on the legalization bill on Monday, Nov. 26 at 10 a.m., according to sources familiar with the plan.

The negotiations over the legalization bill (S2703) have stalled in recent months between state Senate President Stephen Sweeney and Murphy, who have disagreed over the tax rate and whether a new commission should exercise control over the new industry.

Sweeney, D-Gloucester, said he and the Democratic governor have not agreed on the bill. But he said he didn't want to wait any longer.

"We have been talking, and it's time to move forward," Sweeney told NJ Advance Media Monday night. "Hopefully, we can get to agreement with the governor."

Sweeney said he favors imposing a 12 percent tax rate, plus 2 percent for municipalities that are willing to host cannabis-related businesses. He doesn't want to go higher because he fears that it will allow the illegal market to thrive.

Michigan just passed a 10 percent tax rate, Sweeney noted.

Michigan's marijuana tax rate is comprised of a 10 percent excise tax and a six percent sales tax, according to published reports.

Murphy -- as well as legislators who supported earlier versions of the legislation -- have sought a 25 percent tax rate. Murphy has declined to say publicly how much he is willing to budge.

A source familiar with Murphy's side of the negotiations said Murphy and the Legislature are at "an impasse."

"They haven't entertained our proposals or sought to meet us in the middle," the source said, speaking on condition of anonymity.

A spokeswoman for state Assembly Speaker Craig Coughlin, D-Middlesex, could not be reached for comment Monday night.

On his call-in radio program Monday night, Murphy said he awaits a final version of the bill from lawmakers.

"I'm ready to go," the governor said. "The legislators haven't gotten it to us."

But, Murphy added, he doesn't want to "needlessly take shots" at lawmakers.

The legislative committees are also expected to act on legislation (S10) that would expand the medicinal marijuana program, according to the most recent legislative calendar.

The number of patients registered with the medicinal marijuana program, 35,700, has more than doubled in the past year.

But the program is still cost-prohibitive for many because New Jersey's cannabis is among the most expensive in the nation, and patients are required to see their doctor every three months to review their qualifications.

The legislation (S2426) aims to expand the program will allow people to see their doctor once a year to maintain their eligibility.

All legislation must be voted on by the full 80-member Assembly and 40-member Senate before it goes to the governor's desk.

Susan K. Livio may be reached at slivio@njadvancemedia.com. Follow her on Twitter @SusanKLivio. Find NJ.com Politics on Facebook.