He doesn't have dementia. He has age related cognitive decline, which isn't great either. I think he's going to last in the race until the first set of high quality, post-debate opinion polls come out. I think this actually might be a best case scenario for America. The behind-the-scenes fight right now should be Witmer v. Josh Shapiro, with no other serious contenders. Both upper midwest pragmatist governors who are very popular in relatively evenly dem-gop split states. Either would be formidable, assuming it's not too late to mount a serious campaign. I think Trump is more like America's Maduro--stupid and incompetent but with an authoritarian's disposition. But I don't like gambling America's future on a guy who probably isn't fit to be president now, let alone 4 years from now, when the vanquishment of America's Maduro is there for the taking with the right candidate.