Former Long Island Democratic Rep. Tom Suozzi will return to Washington, DC, after winning the nail-biting race to replace expelled ex-Rep. George Santos in New York’s 3rd Congressional District.

Suozzi, 61, cinched the votes needed to beat his Republican candidate rival, Mazi Pilip, 47, in Tuesday’s special House election.

The Associated Press called the race for Suozzi just over an hour after polls closed at 9 p.m. with 52% of votes in.

The political veteran, who represented a large swath of the current district for six years, spent much of the campaign sparring with Pilip over abortion and border security.

In a last-ditch dig on Sunday, Suozzi had painted his opponent as “George Santos 2.0.”

“I’m sick and tired of what’s happening in Washington, DC,” he declared as he wooed voters during a “get out the vote” rally in Plainview on Sunday.

Meanwhile, throughout the tight race, Suozzi walked the fine line of positioning himself as a loyal Democrat — while also managing to keep his party’s brand partly at bay after the wealthy and conservative district Santos, a Republican, an 8-point victory in 2022.

He confessed, too, that President Biden — even though he was in New York for fundraisers last week — would likely have hurt his campaign if he’d hit the trail with him.

“The president is underwater in the district,” Suozzi told The Post last week. “I don’t think that Joe Biden campaigning for me would help me.”

Gov. Kathy Hochul, who is deeply unpopular on Long Island, was also absent from his campaign.

Suozzi put up a strong showing in the Queens portion of the district, grabbing about 62% of the vote there before clinching enough votes in Nassau to earn the seat.

The ex-Long Island Rep., who was first elected to the House in 2016 and won reelection in 2020, gave up his seat to launch what would be an unsuccessful primary bid for governor against Hochul in 2022.

He had also served as the mayor of Glen Cove from 1994 to 2001 and as Nassau County’s elected executive from 2002 to 2009.

Still, despite his lengthy political background and being well-known in the region, his race to fill Santos’ seat wasn’t an easy feat.

Various polls had shown Suozzi and his GOP rival neck-and-neck among voters.

 A J.L. Partners poll released late Monday night had the candidates at just a 1 percentage point difference, with Suozzi in the lead at 46% and 9% of respondents undecided.