MALVERN, Pa. -- Vice President Kamala Harris is doing a series of moderated conversations with former Wyoming Republican Rep. Liz Cheney in suburban cities in the battleground states of Pennsylvania, Michigan and Wisconsin on Monday -- the day before in-person voting begins in Wisconsin.

With roughly two weeks until Election Day, the effort is part of the Harris campaign's effort to reach swing voters in the crucial battleground states. Harris is speaking with Cheney in the suburban areas of Chester County, Pennsylvania; Oakland County, Michigan; and Waukesha County, Wisconsin.

The conversations were to be moderated by Bulwark publisher and longtime Republican strategist Sarah Longwell and conservative radio host and writer Charlie Sykes.

Both Harris and former President Donald Trump have events scheduled for battleground states this week as they work to win over voters in what's expected to be a close contest. On Monday, Trump is spending time in in the battleground state of North Carolina.

While in Pennsylvania, Harris and Cheney worked to pick off Republicans disaffected with their party's nominee who may vote for the vice president and focus on the dangers Trump poses to the country and to democracy -- especially white suburban women who voted Republican.

"There are months in the history of our country which challenge us, each of us, to really decide when we stand for those things that we talk about, including, in particular, country over party," Harris said.

Cheney, a staunch Trump critic who endorsed Harris in September despite their party and policy differences, said "every single thing in my experience and in my background has played a part" in her supporting Harris.

"In this race, we have the opportunity to vote for and support somebody you can count on. We're not always going to agree, but I know Vice President Harris will always do what she believes is right for this country. She has a sincere heart, and that's why I'm honored to be in this place."

At the Michigan event, Cheney said that she understood why some Republicans would find it difficult to publicly support Harris.

"I certainly have many Republicans who will say to me, 'I can't be public.' They do worry about a whole range of things, including violence. But, but they'll do the right thing," she said.

“And I would just remind people, 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 November 5th, vote for Vice President Harris,” she added.

Cheney voted to impeach Trump following the events of Jan. 6, 2021, and was vice chair of the House select committee that investigated the Jan. 6 attack on the Capitol. She received backlash from Trump and other Republicans for her criticism of the former president and was censured by the Republican National Committee.

Since her endorsement of Harris, Cheney has campaigned for the vice president -- including in battleground Wisconsin, where she called Trump petty, vindictive and cruel.

Cheney is among a handful of prominent Republicans, including her father, former Vice President Dick Cheney, who have pledged to support Harris' bid.

The number of actual votes these events could move, with just two weeks to go, is small -- yet could be significant in states expected to be decided by slim margins, Joe Zepecki, a Milwaukee-based Democratic strategist, told ABC News.

Ideally, Zepecki said, the events would bring over "Republicans available to Harris who might need one last reminder, one last push in that direction."

George Levy, a 66-year-old voter from Delaware County, outside Philadelphia, said he was an independent until Trump entered the political arena in 2015.

"I'm never going back. I'll be a Democrat from now on," he told ABC News as he waited in line to enter the intimate theater in Malvern, Pennsylvania, a Philadelphia suburb that was the site of the first Cheney discussion of the day.

"[Cheney] did the right thing for our country, and I'm proud of her for doing that," he said. "I know she doesn't agree with many Democratic policies, but she believes in our country and loves our country, and I appreciate her speaking out."

In a social media post on Monday, Trump attacked Harris for campaigning with Cheney, claiming that the former Wyoming Republican congresswoman is going to lead the United States to go to war with "every Muslim Country known to mankind" like her father and former Vice President Dick Cheney "pushed" former President Georgia W. Bush to the war in the Middle East.

Harris' events this week will feature more interactivity where voters see the vice president taking questions -- including during her town hall with CNN on Wednesday in Pennsylvania.

ABC News' Sarah Beth Hensley contributed to this report.