Because....despite all of the “polls” claiming a Trump win....his unfavorability is increasing/rising...
as we speak. And for the first time, he actually took flac last nite and broke a sweat (his mustache, mostly...lol).
Portending signs, IMO.
Sounds ominous and scary, but you just keep right on believing it, as Trump racks up electoral victories, one after the other. The actual votes are the only polls that really matter, but apparently, they're less important to you than an opinion poll that aligns with your bias.
When it's all over, and Trump is President, you'll always have your precious opinion polls to look back on.