text:  And the singular event that hangs over this entire convention is the one that none of us expected, which is the attempted assassination of the presumptive Republican nominee. And the news is just flying at us this morning. We just got word that he's going to be announcing his running mate today, his choice of a VP. So this is a pretty extraordinary day already, before 10 a.m., and we're going to try to make sense of it all.