Your point is off the mark, propaganda works, it cost Hillary the election; that last minute FBI story swayed people and secured Trump as the winner despite the story being false.
It made the numbers move, but those are the same numbers that predicted a Hillary win. Clearly those numbers reflected more factors than absolute voting intention. For example: how acceptable it was to oppose Hillary in public.
Nobody gets to rerun the election in a Comey-less alternate universe and see if he changed it all. Pretending you can is self delusion.
Whether Comey influenced it or not is also a moot point, since Comey was a high-profile public servant making an official statement to the mainstream media, not a bunch of anyonymous forumites and Tweeters arguing with other anonymous forumites and tweeters across random internet backwaters.
The numbers didn't have time to move, that was the point of the late release, and why the polls were off, they didn't have time to adjust to the new information.
> Nobody gets to rerun the election in a Comey-less alternate universe and see if he changed it all. Pretending you can is self delusion.
I'm not pretending anything, you pretending that news didn't change the outcome of a close election is you being delusional.
Polls take time to move, some moved, some weren't re-polled before the election, and no polls aren't just polls; poll are a statistical sampling of the electorate and do allow you to draw a trend line and notice things like hey, that piece of news made a different in the outcome. That elections happen only once is not relevant, it doesn't invalidate the poll data that shows minds were changed.
Nobody gets to rerun the election in a Comey-less alternate universe and see if he changed it all. Pretending you can is self delusion.