2024 election updates: More than 1.5M have voted early in battleground Georgia

Vice President Kamala Harris participated in a series of moderated conversations with former Rep. Liz Cheney in Pennsylvania, Michigan and Wisconsin on Monday.

In those appearances, Cheney made a case for conservatives to vote Democrat in the upcoming election and support Harris’ bid for the White House.

“What I would say is that if people are uncertain, if people are thinking, ‘Well, you know, I’m a conservative, I don’t know that I can support Vice President Harris,’ I would say, I don’t know if anybody is more conservative than I am,” said Cheney, who was the third-ranking member of the House Republican Conference from 2019 to 2021.

Cheney also warned Republicans considering voting for Trump that Congress would not be a check on him.

“For anybody who is a Republican who is thinking that, you know, they might vote for Donald Trump because of national security policy, I ask you, please, please study his national security policy,” Cheney said. “Not only is it not Republican — it’s dangerous. And without allies, America will find our very freedom and security challenged and threatened.”

“And one final point on this: Don’t think that Congress can stop him,” Cheney added.

In Malvern, Pennsylvania, Cheney said she thought there would be Republican voters who would cast their ballots for Harris — even if they did not reveal it publicly.

In Michigan, she went further, encouraging voters to do just that, saying, “If you’re at all concerned, you can vote your conscience and not ever have to say a word to anybody, and there will be millions of Republicans who do that on Nov. 5, vote for Vice President Harris.”

-ABC News’ Gabriella Abdul-Hakim, Fritz Farrow, Will McDuffie and T. Michelle Murphy