Sen. Susan CollinsSusan Margaret CollinsDemocrats search for 51st net neutrality vote Overnight Tech: States sue FCC over net neutrality repeal | Senate Dems reach 50 votes on measure to override repeal | Dems press Apple on phone slowdowns, kids' health | New Android malware found Overnight Regulation: Dems claim 50 votes in Senate to block net neutrality repeal | Consumer bureau takes first step to revising payday lending rule | Trump wants to loosen rules on bank loans | Pentagon, FDA to speed up military drug approvals MORE (Maine) says she will vote in favor of a bipartisan compromise on expanding background checks on gun purchasers, according to a report.

Collins in an interview with NBC News called the measure crafted by Sens. Joe ManchinJoseph (Joe) ManchinMcConnell to Dems: Don't hold government 'hostage' over DACA Lawmakers see shutdown’s odds rising Senate campaign fundraising reports roll in MORE (D-W.Va.) and Pat Toomey (R-Pa.) “reasonable” and said she had reviewed the actual language of the proposal.

The Maine senator, who is up for reelection in 2014, acknowledged that her support is “not a popular thing in my state.” 

Collins told NBC that she would not have backed a proposal for universal background checks and believed the compromise rightly excluded gun transfers between family members.

Collins along with Sen. Mark KirkMark KirkHigh stakes as Trump heads to Hill Five things to watch for at Trump-Senate GOP meeting Giffords, Scalise highlight party differences on guns MORE (R-Ill.) are the only Republicans to publicly say they will vote in favor of the deal crafted by Toomey and Manchin. 

Toomey last week said he was unsure if he could find the 60 votes to make the deal law. 

“I think we got a few voting hurdles and I don’t know how they will turn out,” he said in an interview.

Collins is one of 16 Republicans who voted on Thursday to open debate on a gun control measure in the Senate, helping to overcome threats from some GOP senators to filibuster the measure.

The vote came after Manchin and Toomey reached their bipartisan agreement on expanding background checks to all gun show and internet sales. 

Earlier efforts at a deal had faltered and the Senate gun bill included a Democratic proposal from Sen. Charles SchumerCharles (Chuck) Ellis SchumerDemocrats will need to explain if they shut government down over illegal immigration White House: Trump remarks didn't derail shutdown talks Schumer defends Durbin after GOP senator questions account of Trump meeting MORE (D-N.Y.) on the issue, which Republicans said they would block over concerns it could create a federal database of gun owners.

The Manchin-Toomey deal, though, could bring support from centrist Republicans and red state Democrats, bolstering the Senate bill’s chances of passage.

The bill also contains a bipartisan measure to increase penalties on straw traffickers and additional funding for school safety. 

Collins also discussed speaking with families of victims of the Newtown shooting last week, a meeting which led her to be late for a White House dinner with President Obama and fellow GOP senators.

“I was willing to make the choice to be late for the president in order to meet with the grieving families,” Collins told NBC.

Victims’ families and gun-control advocates led by the White House have made a public push to rally lawmaker support for the Senate gun violence bill. But it faces a long road, with a lengthy amendment process ahead and Speaker John BoehnerJohn Andrew BoehnerDems face hard choice for State of the Union response Even some conservatives seem open to return to earmarks Overnight Finance: Trump, lawmakers take key step to immigration deal | Trump urges Congress to bring back earmarks | Tax law poised to create windfall for states | Trump to attend Davos | Dimon walks back bitcoin criticism MORE (R-Ohio) declining to commit to a vote on the Senate gun bill.