The momentum that gun-control advocates had going for them after highly publicized massacres in 2012 may have been slowed, possibly even stopped, by a historic election in Colorado on Tuesday night.

Former state Sen. President John Morse — one of the central figures in the state’s gun control movement — and former state Sen. Angela Giron — whose Pueblo district is heavily Democratic — are out of a job.

Organizations and citizens who fought the measures claim a line in the sand was drawn when Colorado passed a package of gun control legislation this year. The result: The people fought back and won, they say.

The morning after the recall, the election results spread throughout the county, leaving many to wonder if other states would shy away from similar legislation, or press on harder.

Eric Sondermann, an independent political analyst, said the recalls will make other state’s lawmakers considering gun control legislation back off.

“It’ll have an outsized impact because of the attention these recalls got,” Sondermann said. “It’s a major blow to (New York Mayor Michael) Bloomberg and the gun-control movement because it’ll deter a lot of lukewarm legislators who were motivated by the issue of gun control.”

Giron’s recall, in particular because of her heavily Democrat district, sends a substantial warning, Sondermann said.

“For Giron to lose by 12 points is a strong message,” he said.

Immediately after the recall results were in for Morse, the National Rifle Association told The Denver Post that Democrats had gone too far in Colorado, and, what’s more, they made a fatal error in bringing in the national backing of gun-control advocates.

“One thing is clear from the Morse result: Mike Bloomberg is political poison,” NRA spokesman Andrew Arulanandam said.

Morse’s job was to defend the rights of the people he represented, Arulanandam said, which he didn’t, resulting in “concerned citizens” starting a movement to have him removed.

Before the recall results were in, Mark Glaze, executive director of Mayors Against Illegal Guns, told The Post that no matter the recall outcomes, a clear message had been sent to the once-unchallenged NRA on gun-control dealings: “You no longer have the field to yourself.”

What’s more, Mayors Against Illegal Guns — Bloomberg’s anti-gun-violence group, which has deep pockets — will continue to support any lawmaker who follows Morse’s and Giron’s actions.

“A message has been sent that legislators who take risks to protect their community; we will have their back, and, eventually, the tide will turn,” Glaze said.

Leslie Oliver, spokeswoman for U.S. Rep. Ed Perlmutter, D-Jefferson County, said the election outcome would not sway the congressman in his beliefs.

“From what we’ve seen, the majority of people still support common-sense gun laws,” Oliver said. “The recalls haven’t changed anything in substance. The laws are still on the books, still in effect.”

Dan Gross, president of the Brady Campaign to Prevent Gun Violence, said the Colorado recalls will have no effect on the national movement for greater gun control.

“The gun lobby and a handful of extremists were able to carry the day by suppressing the voice of the people of Colorado,” Gross said. “This is in no way a referendum on the greater national push for sensible gun control.”