White House Chief of Staff Ron Klain said Thursday morning that President Joe Biden’s Wednesday night speech was “one final warning” to election deniers.

Biden delivered a speech at Union Station in Washington, D.C., Wednesday night, touching on several topics such as the attack on Speaker Nancy Pelosi’s husband, as well as election deniers. Biden condemned Republicans who deny the results of the 2020 election and said “American democracy is under attack” because former President Donald Trump believes the election was stolen.

Klain doubled down on Biden’s remarks Thursday, saying Biden was giving “one final warning” to election deniers.

“The president’s been talking about the threat to our democracy since he launched his campaign in 2019 and again on January 6th and again in September in Philadelphia, Independence Hall. I think the president decided a few days ago it was important to issue one final warning on this issue, to make it very clear to leave no doubt that we have people out there still peddling the big lie, people now raising the issue of election denial in this election, and of course the horrible incident involving Speaker Pelosi and her family, you know, showing the rising threat of political violence.”

WATCH:

“And so I think all those things came together and led the president to make the strong remarks he made last night.” (RELATED: ‘Where Is Nancy?’: Biden Compares Attack On Paul Pelosi To January 6)

Biden himself has cast doubt on elections, including the outcome of the 2022 midterms. Biden said in January the election would only be fair if the Freedom to Vote Act and the John Lewis Voting Rights Advancement Act were passed.

“It all depends on whether or not we’re able to make the case to the American people that some of this is being set up to try to alter the outcome of the election,” Biden said at the time.