Sen. Scott Brown (R-Mass.) called gay marriage "settled law" in Massachusetts and encouraged detractors to move on and focus on economic issues.

"It’s settled law in Massachusetts. Quite frankly, everybody’s moved on," Brown told CNN's Piers Morgan on Monday.

Brown said some people still care about the issue, but that the overriding concerns for both gay and straight people include jobs, taxes and the deficit.

"We’ve moved on. I encourage everyone else to move on," Brown said. "It should be decided state by state basis. I’m focusing on those other things."

Brown has said in the past that he opposes same-sex marriage, but has never made a major push to obstruct it in Massachusetts, where gay marriage has been legal for almost a decade. Brown diverged from his party to support repealing a ban on gays serving openly in the military, but Democrats have said he's far from a gay-rights champion, noting he opposed non-discrimination legislations for gays and declined to participate in a video about anti-gay bullying.

"I'm sure Scott Brown wants to move on from marriage equality since his position is not the one supported by a majority of Massachusetts voters," said Massachusetts Democratic Party spokesman Kevin Franck. "If Scott Brown thinks marriage equality is settled law in Massachusetts, he should talk to the thousands of gay couples whose marriages aren't recognized by the federal government."

Brown has been careful not to be pigeonholed with other Republicans as anti-gay rights, keenly aware of how damaging that could be to his prospects for holding onto his Senate seat in deep-blue Massachusetts. His presumed opponent, Democrat Elizabeth WarrenElizabeth Ann WarrenFederal court rules consumer bureau structure unconstitutional Election Countdown: Family separation policy may haunt GOP in November | Why Republican candidates are bracing for surprises | House Dems rake in record May haul | 'Dumpster fire' ad goes viral The Hill's Morning Report — Sponsored by PhRMA — GOP lawmakers race to find an immigration fix MORE, has been endorsed by the Human Rights Campaign, a major gay rights group.

A survey by Democratic firm Public Policy Polling released Tuesday showed Warren with a 5-point lead over Brown. Other recent polls had shown Brown in the lead.