 becoming one of the latest to say today that he thinks the president should drop out. This is a big development, completely changes the race. Stand by, Karen. In a moment, we're going to be going to Steve Roberts and Stephen Portnoy. We've got a lot to talk about here with the Republican convention just ending, where it was focused on a race against Biden and maybe Kamala Harris. Now this upends everything that this race was. First, Karen takes a look back now at the last couple of weeks and how we got to this point.