You type like you work for the Trump administration i.e. refuse to acknowledge the gorilla in the room. Just think, had you said, yes, that was a contributing factor of major importance since it was just 11 days before the vote and sent her polling into a death spiral, I would have no question about your analysis.
Does anyone wonder why reporters continue to hound Mr trump with questions??? because he can't accept the reality in front of him. Should he have ever said yes I take responsibility or yes that really happened, there is no follow up question.