WASHINGTON (NEXSTAR) - While at a rally Thursday in Wisconsin, Vice President Kamala Harris officially picked up the endorsement of former Republican Congresswoman Liz Cheney. Former president Donald Trump was also on the campaign trail in the battleground state of Michigan. The two have never been on the same page when it comes to politics except now. Liz Cheney says she's all in for Vice President Harris.  She says she never voted for a Democrat before until now. "I am proudly casting my vote for Vice President Kamala Harris,” said Cheney. Cheney was the top GOP member of the committee that investigated the January 6 Capitol attack. "Violence does not and must never determine who rules us. Voters do,” said Cheney. Former president Donald Trump spent Thursday campaigning in the battleground state of Michigan.  "We are going to defeat lyin’ Kamala Harris, one of the worst candidates ever,” said Trump. Trump also took a swing at Democratic Minnesota Governor Tim Walz’s debate performance this week. "He called himself knucklehead. We don't want a knucklehead as a president,” said Trump. Trump is set to return to the site of the July attempt on his life in Butler, Pennsylvania Saturday.