Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE (I-Vt.) gave Senate Democrats his presidential pitch on Tuesday — and left his colleagues thankful for not attacking Democratic front-runner Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE.

Democrats said that the Vermont senator struck a familiar tone with them, after roughly a quarter century of pushing his populist economic positions in Washington.

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"It was warm and friendly. We know him. We love him,” said Senate Minority Whip Dick Durbin Richard (Dick) Joseph DurbinMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Senate Republicans signal openness to working with Biden Top GOP senator calls for Biden to release list of possible Supreme Court picks MORE (D-Ill.). “He's the real deal. He's genuine. His message to our caucus hasn't changed one bit."

Sanders’s presentation at the Tuesday lunch came just two weeks after Clinton herself drew wide praise from House and Senate Democrats in briefings about her 2016 campaign. After Clinton's visit to the Capitol this month, Sanders made an extensive case to reporters for why he was the more progressive candidate.

A spokesman for Sanders didn’t respond to requests for comment about the candidate’s pitch to Democrats.

The Vermont senator has closed the gap on Clinton, in both national polling and early primary states, while distancing himself from other Democratic contenders seeking to be the Clinton alternative.

Both Durbin and Sen. Chuck Schumer Chuck SchumerRepublican senator says plans to confirm justice before election 'completely consistent with the precedent' Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Graham signals support for confirming a Supreme Court nominee this year MORE (N.Y.), the Senate Democrats’ next leader, said the caucus didn’t hear much new from Sanders, who has drawn big crowds at events across the nation in recent weeks. Sanders has long pushed for policies, like higher taxes on the wealthy and corporations, and a more robust minimum wage.

But Durbin and Schumer said Senate Democrats were perhaps most pleased that Sanders has refrained from personally attacking Clinton — a stark contrast, they said, to the Republican field. Sanders, however, did criticize Clinton on Tuesday for dodging questions on the Keystone XL Pipeline, a project he opposes.

“He has a very coherent, strong message,” Schumer said. “And people also were appreciative of the fact that he’s not attacking any other candidate. He’s just laying out his view.”

Durbin said it was undeniable that Sanders, who is popular among grassroots liberals, has had an impact on the Democratic campaign.

Liberal activists have hoped that Sanders and others can pull Clinton’s policy prescriptions to the left. But Sanders’s longstanding push to roll back corporate influence of the U.S. economy has not been warmly received by activists, who think he could speak out more about racial injustice.

"He not only got a warm reception, but several senators stood up and said, ‘You know, I'm supporting Hillary, but I respect you because you've kept it at the issues.’ It's not the personal attack that's going on in the Republican primary,” Durbin said.