GOP’s Cheney endorsing Michigan Democrat Slotkin in a first


              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Vice Chair Liz Cheney, R-Wyo., speaks as the House select committee investigating the Jan. 6 attack on the U.S. Capitol, holds a hearing on Capitol Hill in Washington, Oct. 13, 2022. (AP Photo/J. Scott Applewhite, File)
            
              FILE - Rep. Elissa Slotkin, D-Mich., questions witnesses during hearing on Sept. 17, 2020, on Capitol Hill Washington. (Chip Somodevilla/Pool via AP, File)