Vermont Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I) continued his praise of Jeremy Corbyn and the U.K.'s Labour Party Saturday, saying the left-leaning party gained seats in Parliament by standing up to British elites.

While speaking Saturday at The People's Summit in Chicago, Sanders said Labour supporters were successful "not by moving to the right, not by becoming more conciliatory - they won those seats by standing up to the ruling class.”

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The anti-establishment senator praised his British counterpart before and after the U.K.’s general election. While Labour did not get a majority of seats in Parliament, they surpassed pollsters expectations and put the Conservative Party in a considerably weakened position

"We may not have won the campaign in 2016, but there is no question that we have won the battle of ideas,” he said.

The Vermont senator went on to appear to claim credit for the defeat of the Trans Pacific Partnership (TPP), saying five years ago U.S. trade policies were considered great, but now the TPP is defeated. President Trump signed an executive order in January pulling the U.S. out of deal's negotiations.

Sanders was warmly greeted by his progressive supporters at the event, many of whom appeared to push for a 2020 run.

FWIW Bernie was clearly a little annoyed when I asked about 2020, but there are sporadic "2020!" cheers through this speech. — Dave Weigel (@daveweigel) June 11, 2017

Fans with "Draft Bernie" signs, who want him to run in 2020 as an independent, stand up and briefly interrupt his speech. — Dave Weigel (@daveweigel) June 11, 2017

The People’s Summit has brought together various progressive activists from across the U.S. Speakers include controversial Palestinian-American activist Linda Sarsour and CNN’s Van Jones.