Why did the networks take so long to call Wisconsin?

[Thomas Jackson]

As some of you guys were saying, Dems were looking for more votes.  Since Fox favored Trump, that's probably why they called it more quickly, but I have to say, Fox did manage to be (I believe) the first network to call the election for Trump.

PBS beat Fox.

[Thomas Jackson]

Network   -      Time          -      Decisive State.
-----------------------------------------------------------
AP - 2:31 (Wisconsin).
RT - 2:31 (Wisconsin).
Fusion - 2:31 AM (Wisconsin).
PBS -  2:31 AM (Wisconsin).
Fox News -  2:40 AM (Pennsylvania tipping point State) (The Fox anchors didn't seem to know what was going on. Rove was in the middle of speaking when the electoral scorecard flipped on the screen and the crowd outside noticed it and went crazy.)
Fox Business - 2:40 AM (Pennsylvania).
CNN - 2:47 AM (Pennsylvania) (Called the Race when Trump was walking out to the Air Force One music).
CBS - 2:53 AM (I think Pennsylvania, but it is hard to tell, because they called the race in the middle of the speech.)
ABC - 2:53 AM (ABC Called Pennsylvania at 2:47, but had not yet called Wisconsin, they put up a graphic in the middle of Trump's speech saying that he was the next President, but didn't update the electoral votes until later.)
NBC - 3:03 AM (Called both Pennsylvania and Wisconsin at the same time, almost at the very end of the victory speech.)
MSNBC - 3:03 AM (Called both Pennsylvania and Wisconsin at the end of Trump's speech.)
BBC - 3:04 AM (Wisconsin).

[Thomas Jackson]

Interestingly enough, when Pennsylvania was called by the AP, the networks that relied on the AP call all admitted it was over, even though Wisconsin wasn't called for another hour.

Example:

https://youtu.be/NM220XCGypQ