Haven't seen the news. But I am not so surprised.
It didn't seem fair to his wife to put her into the toxic stew of this election.
And while he seems an admirable person, he hasn't really forced his way into contention in the last few weeks. To me, he's always been an outsider.
I think Kamala Harris needs support from a person whose main strength is being articulate in a way that resonates in swing states. I think Kelly has the best role for himself right now as a worthy senator from Arizona.