In this Feb. 17, 2016 photo, plants grow at the home of Jeremy Nickle, in his backyard in Honolulu, Hawaii. Nickel, who owns Hawaiian Holy Smokes and is applying for a dispensary, grows a variety of strains and has a medical marijuana card. Those wanting to open medical marijuana dispensaries in Hawaii face unique obstacles in a state of islands separated by federal waters. (AP Photo/Marina Riker)
In this Feb. 17, 2016 photo, plants grow at the home of Jeremy Nickle, in his backyard in Honolulu, Hawaii. Nickel, who owns Hawaiian Holy Smokes and is applying for a dispensary, grows a variety of strains and has a medical marijuana card. Those wanting to open medical marijuana dispensaries in Hawaii face unique obstacles in a state of islands separated by federal waters. (AP Photo/Marina Riker) Credit: Marina Riker

HARTFORD, Conn. — As a multimillion-dollar fight over recreational marijuana in Massachusetts races toward the finish line, both sides of the debate in Connecticut are keeping a close eye on a vote that could open the door to legalization across New England.

Massachusetts is one of five states where measures to legalize and regulate the sale of recreational marijuana will be on the ballot. Voters in Arizona, California, Maine and Nevada will also vote on the issue. An affirmative vote in Maine or Massachusetts would bring legal recreational marijuana to the region for the first time, putting new pressure on those in the state that oppose expanded marijuana use.

Jill Spineti, president and CEO of the Governor’s Prevention Partnership, said her group wasn’t yet willing to shift the dialogue from opposing recreational marijuana use to figuring out the best way to regulate it. At the same time she acknowledged how legal cannabis across the border would complicate that fight.

“We’re staying focused on opposition,” Spineti said. “But I do believe that if Massachusetts approves it, it will be much harder to oppose it here.”

There’s also the question of people crossing the border to buy marijuana. Something Spineti said some Connecticut employers have raised concerns about.

It’s been almost two years since a public opinion poll asked Connecticut voters about marijuana legalization. In that March 2015 Quinnipiac Poll, 63 percent of voters said they supported allowing adults to possess small amounts of marijuana for personal use.

The four states that have legalized marijuana for recreational use — Alaska, Colorado, Oregon and Washington — have all done so through ballot initiatives, an option that’s not available here. In Connecticut the legislature would have to approve a bill, and Gov. Dannel P. Malloy would have to sign it. Malloy, who supported enacting the state’s medical marijuana program and decriminalizing the drug, has said that’s as far as he’s willing to go.

But that hasn’t stopped the issue from coming up at the Capitol. A legalization and taxation bill was introduced last year and had about a dozen Democratic co-sponsors. An informal informational hearing was held with experts on both sides offering testimony before interested legislators.

Proponents of the bill said Connecticut would be losing out on valuable tax dollars if it wasn’t the first state in New England to move forward with recreational marijuana legalization. State Rep. Vin Candelora, a Republican from North Branford who opposed the bill, said lawmakers shouldn’t see tax revenue from the legalization of marijuana as a solution to the state’s budget problems. He called it “blood money.”

“I think generally speaking it’s a sad day when we’re using gambling and illicit drugs as economic development,” Candelora said.

The amount of revenue taxing marijuana would bring to Connecticut is unclear. A report two years ago from the legislature’s nonpartisan fiscal office said Connecticut could see $25 million to $55 million in annual revenue from marijuana taxes.

Rep. Edwin Vargas, a Hartford Democrat who supported the marijuana legalization bill, said money that is funding criminal enterprises would instead be directed toward state government. Drug dealers would see their business undercut, he said, and fewer youths would be arrested for dealing.

“I knew all along this was going to sweep the states after the success in Colorado,” Vargas said. Colorado, the first state to legalize and tax recreational marijuana use, brought in $130 million in tax revenue in the last fiscal year. “The only thing I feel bad about is we could have been first in the area and established the industry here. The one that establishes the industry first has a huge advantage.”