Furious former Democrats — fed up at the party’s leftward lurch — are banding together in protest under the banner of the #Walkaway movement.

The five-month-old online effort pushes the idea of abandoning a party that, members say, has become allergic to dissent and hostile to moderate voices.

“Democrats seem so angry, like they’ve turned hard left into socialism,” said Maureen Holland of Deer Park, L.I. “It’s very scary to me.”

“We’ve had a huge surge since the Kavanaugh hearings,” said Brandon Straka, organizer of the campaign, who says its Facebook group has grown to 205,000 members.

Holland’s is one of the thousands of testimonials posted to the page. She shared her joy at changing her party registration after 30 years as a Democrat on Oct. 17.

Straka, of Manhattan, sparked the group in June with a slick six-minute video testimonial that’s been viewed 385,000 times on YouTube.

“I like his message,” Isabel Poli of Staten Island told The Post. “It’s not ‘vote Republican,’ it’s ‘don’t tell another person they have to think your way’.”

“Bravery is contagious,” said Pete Holmberg of Manhattan, who is running for a state Senate seat as a Republican thanks in part to Straka’s encouragement.

The campaign inspired Poli to do something for the first time, she said: vote in a midterm election.

“I’m voting now, in November, because I’m very disgusted with what’s going on,” she said, citing acts of violence against Trump supporters.

Straka led a mile-long march of several hundred supporters in Washington, D.C. Saturday as a show of force ahead of Election Day.

President Trump praised for the event shortly before it began.

“Walkaway from the Democrat Party movement marches today in D.C.,” he tweeted. “Congratulations to Brandon Straka for starting something very special.”

Critics, including CNN commentator David A. Love, have accused Straka and his group of being a disinformation campaign orchestrated by Republicans – and spread by Russian bots.

Not so, Poli said.

“You have a lot of people out here who are on the same page,” she said. “They just feel like they can’t say it out loud.”