Kamala Harris still a fill-in-the-blanks candidate despite all that DNC 'joy.' Is she at her high-water mark?

Did the Democratic National Convention intentionally spread rumors of a surprise Beyonce performance at their gathering on Thursday night to fill the auditorium? If so, it was a cheap trick, and says a lot about their confidence in Kamala Harris’ star power. But that is no surprise; after all, this is the same crew that won’t let their candidate speak off-script, for fear she’ll say something idiotic.

That cannot last. From this star-studded night forward, the Democratic nominee will be pressed to fill in the blanks.