New Jersey voters, registered Democrats and Republicans alike, support extending access to state driver’s licenses to undocumented immigrants, according to a new survey conducted by an organization lobbying for the change.

The results of the poll, commissioned by the Let’s Drive NJ Campaign and released Monday, found that 54 percent of 561 voters surveyed support legislation that would allow undocumented immigrants to be issued driver’s licenses, while 29 percent opposed it and 17 percent said they were unsure. The poll has a margin of error of plus or minus 4.13 percentage points.

Even though both Democrats and Republicans supported the measure, registered Republicans were more divided on the issue, with 48 of those surveyed stating they were in favor and 38 opposed.

“We are here to say that New Jersey cannot hold off any longer on moving this forward," Johanna Calle, director of the New Jersey Alliance for Immigrant Justice, one of the organizations coordinating the Let’s Drive Campaign, said during a conference call announcing the poll results. "Expanding access to driver’s licenses as we all know is a priority for immigrant communities but also for the public safety of everyone.”

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State lawmakers introduced a bill in November to create two types of licenses: one compliant with the federal Real ID Act that would let users board domestic flights, and one strictly for driving that would be issued to immigrants without legal status, certain senior citizens and others who lack documentation. If the bill were to be adopted, it could benefit up to 460,000 undocumented immigrants living in New Jersey, said Erika Nava, a policy analyst for New Jersey Policy Perspective, a left-leaning think tank.

Supporters of the bill, though, face challenges. Besides dealing with opponents in the Legislature who have said the measure prioritizes immigrants without legal status above everyone else, they also have this year's elections to consider. In November, all 80 seats in the Assembly will be on the ballot, and some political observers have said they expect Assembly Speaker Craig Coughlin, D-Middlesex, who is leading the Assembly Democratic campaign, to stay clear of proposals like the driver's license bill that could make his members targets of political attack ads.

On Monday, a staffer at the office of Assemblywoman Annette Quijano, D-Union, one of the sponsors of the driver's license bill, referred questions about the proposal to Kevin McArdle, a spokesman for Coughlin.

In a statement, McArdle said Quijano was still finalizing her legislation.

"It's a complicated and technical bill and it's critical to get it done correctly rather than quickly,'' he said in an emailed statement. "The speaker is awaiting a finished product for a thorough review before deciding on a course of action and a time frame for moving the bill."

Gov. Phil Murphy, a Democrat, has said he supports giving access to licenses to immigrants without legal status, and Calle noted that Stephen Sweeney, the Democratic president of the state Senate, also has expressed support.

If the Legislature approves such a bill and Murphy signs it, New Jersey would join 12 states, and the District of Columbia, that have extended driving privileges to immigrants living in the country illegally.