Convicted felon Hiram Monserrate has a real shot at winning back his old City Council seat in Queens, according to Democratic insiders.

“People in the senior centers, the churches, people who are prime voters, they’re talking about Hiram. People are saying, ‘He’s paid his dues to society. Why not give him another chance?’ ” said one Queens Democrat familiar with the 21st Council District, which covers Corona, East Elmhurst and Lefrak City.

Monserrate, 50, has a résumé that would doom most other candidates.

He was found guilty of a misdemeanor for slashing his girlfriend with a broken glass during a fight in December 2008.

At the time, he was a state senator and his colleagues voted to expel him in 2010.

Eight months later, the feds charged him with steering $109,000 in government funds to a nonprofit and then using the money for his campaigns. He pleaded guilty to mail fraud and conspiracy and served 21 months of a two-year sentence.

That hasn’t stopped the most audacious comeback bid by a fallen New York politician since ex-Gov. Eliot Spitzer tried to put a prostitute scandal behind him by running for city comptroller in 2013, a race he narrowly lost.

Monserrate demonstrated his strength by submitting 5,000 signatures on nominating petitions.

His chief rival, Assemblyman Francisco Moya, who jumped into the race late after incumbent Julissa Ferreras dropped out, handed in 2,596.

Monserrate is also better known than his opponent, having served the district as its councilman from 2002 to 2008.

Moya’s Assembly district overlaps only a portion of the council district.

Moya, 43, has more money in his campaign kitty — $89,126 compared to $30,534 for Monserrate. But both will likely qualify for 6-to-1 public matching funds.

Monserrate admitted Tuesday he’s still paying off the $79,000 in restitution for his federal crime.

“I committed my sins. I paid for them. I paid my dues,” he said.

“Now I’m ready to come to work and represent this community with dignity and honor. I have a new life. I’m married. I have a beautiful, loving wife. We’re moving forward.”

But Moya, who appeared at Moore Park in Corona with Mayor de Blasio Tuesday, said voters won’t forget.

“I’ll put my record up against his violent, criminal and corrupt past any day of the week,” said Moya, who claims to be the first Ecuadorian-American elected to public office.

He noted voters have already rejected Monserrate three times.

“It’s a testament to where voters are when it comes to Hiram Monserrate . . . I think the people are ready to move forward.”

Monserrate called Moya a “puppet of the machine” with an undistinguished six-year record in the Assembly.

Voters in the Corona park were split on Monserrate.

“You insulted a lot of people and you embarrassed a lot of people and we’re not that quick to forget about it,” said Vincent Laucella 37, who backs Moya.

Others are willing to forgive.

“We all do stupid things. If he does the right thing, I’ll vote for him,” said Patrick McDermott, 66.