I don't think Harris is a foregone conclusion. Let us not forget that Biden's undoing was not his dementia, but his poll numbers. If they can't get Kamala within striking distance before the convention, the poll numbers will be her undoing as well. I expect to see quite a push here in the next week and a half, and if Harris is still not within the margin of error in the swings states after that, there will be an open convention.