Rep. Ilhan Omar Ilhan OmarOmar urges Democrats to focus on nonvoters over 'disaffected Trump voters' Omar fires back at Trump over rally remarks: 'This is my country' Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE (D-Minn.) is throwing her support behind Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE’s (I-Vt.) presidential campaign, joining fellow first-year Rep. Alexandria Ocasio-Cortez (D-N.Y.) in endorsing the progressive senator.

Omar confirmed her endorsement of Sanders in a tweet Wednesday morning after Sanders took the stage for the latest Democratic debate.

Omar added that Rep. Rashida Tlaib Rashida Harbi TlaibTrump attacks Omar for criticizing US: 'How did you do where you came from?' George Conway: 'Trump is like a practical joke that got out of hand' Pelosi endorses Kennedy in Massachusetts Senate primary challenge MORE (D-Mich.) is also endorsing Sanders’s presidential bid.

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“Proud to endorse @SenSanders for President, glad that @AOC and @RashidaTlaib are on board too. It’s time,” Omar tweeted.

“Bernie is leading a working-class movement to defeat Donald Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE that transcends generation, ethnicity and geography,” Omar said in a statement.

Sanders in his own statement called Omar “a leader of strength and courage.”

“She will not back down from a fight with billionaires and the world’s most powerful corporations to transform our country so it works for all of us. I’m proud of what we’ve done in Congress, and together we will build a multiracial working class coalition to win the White House,” he added.

The endorsements give Sanders the backing of three out of the four progressive freshman lawmakers who make up “the squad,” with only Rep. Ayanna Pressley Ayanna PressleyEnding the Hyde Amendment is no longer on the backburner Fauci, Black Lives Matter founders included on Time's 100 Most Influential People list Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE (D-Mass.) not yet publicly endorsing a candidate.

Pressley comes from the same state as one of Sanders’s top competition for the Democratic presidential nomination. Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) has gained in the polls in recent months and has appeared to cut into Sanders’s support among progressive voters.

Warren previously picked up the endorsement of the Working Families Party, a key progressive group that backed Sanders in the 2016 election.

Sanders made his first national appearance at a debate Tuesday night since a heart procedure temporarily sidelined him.

He promoted his upcoming rally in Queens and teased the presence of a “special guest,” noting that he will continue “mounting a vigorous campaign all over this country.”