Watch: Kamala Harris and Liz Cheney hold joint rally at Republican Party's birthplace

On Thursday, Vice President Kamala Harris is set to hold a rally alongside former Rep. Liz Cheney (R-WY) in Ripon, Wisconsin, the site of an 1854 schoolhouse meeting that kicked off the founding of the Republican Party.

Wisconsin is a crucial battleground state, and part of the so-called "blue wall" of three competitive states that are likely to decide the election, alongside Michigan and Pennsylvania.

The rally is unusual in that Cheney is a conservative Republican who previously chaired the House GOP Conference.