Six Key Democratic Governors Endorse Kamala Harris
New York Times
Gretchen Whitmer, JB Pritzker, Tim Walz, Wes Moore, Andy Beshear and Tony Evers all backed Ms. Harris, cutting off nearly all potential avenues to a challenge for the nomination.
https://www.nytimes.com/2024/07/22/us/politics/governors-endorse-harris.html