Man, it's always something.
While I absolutely don't think this will effect the overall election, it's certainly a bad look. So much of this thread has argued that it is bad politics to play into your opponent's narrative of you, and this (regardless of the veracity of the narrative) plays into Trump narrative that Clinton lacks stamina and is too weak to be President. That video looks terrible especially in a season dominated by a conversation about America's lack of strength on the global stage.
I agree that she should do a press conference tomorrow and release even more extensive medical records to put this rest, but ANYTHING else that happens this season will be under a microscope. Her campaign has to thread the needle by not packing her schedule so much that this gets brought again but not culling it to the point she looks like she's weak.
Also, thus far, the GOP hasn't made this an issue because honestly, they don't need to. It plays into the narrative by itself. Congresswoman Black, who was a nurse from TN, was on CNN and she didn't take Tapper's bait at all.
There is no upside to this. Based off of today's coverage, next week will be about Hillary's fainting, "basket of deplorables", and the tightening of the race instead of the Trump Foundation story and his Putin comments.