It isn’t even about her when it comes right down to it. It is about a media narrative. If she wins, it’s a yawner. If she loses, there will be a nonstop media barrage for a week (or longer) about how the GOP is finished, as well as the President.
If she wins by less than 5%, they are also prepared to paint that as a close call that somehow also threatens Trump. Then, back to RUSSIA!!!