Of these two, I think Whitmer has the best chance to stop Trump.

Newsom probably could too, but Whitmer being from Michigan would really help in stopping Trump. She also has her own attempted kidnapping & assassination plot which would help to dampen the boost Trump will get from his.

Regardless, Harris has all of the funding she and Biden raised from earlier this year. That war chest is going to be needed to beat the republicans. She is the smoothest transition for democrats and rallying behind her now will prevent a potentially messy open convention and allow us to redirect our attention towards ending Trump’s political career once and for all.

To be clear, I do think Harris can beat Trump too - just not as handily. Harris was a prosecutor, then an Attorney General for the largest state in the Union, a senator for the largest state in the Union, and then Vice President for an extremely accomplished administration. She has the resume to do the job.