Taylor Swift already endorsed Biden in 2020. Her views on Trump have not changed, the demographics of her fans has not changed. Celebrities dislike surprises. It would be highly surprising to snub the possible first female POTUS (also the first black female, first mixed race and Asian) after supporting Biden who was a 78 year old white male. And, just look at this article from 2020. It's the most obvious thing ever.
https://www.nbcnews.com/politics/2020-election/taylor-swift-endorses-joe-biden-president-n1242483
"So apt that it’s come out on the night of the VP debate," Swift said to her more than 87 million followers. "Gonna be watching and supporting @KamalaHarris by yelling at the tv a lot."
@PlainBG The difference is that in 2020, as far as I can remember, she hadn't recently been the target of terrorist violence. That, in combination with the recent attack on Trump, leads me to believe she will prioritize her own safety and the safety of her fans and stay silent on this.
@PlainBG youll never understand taylor swift like i understand taylor swift just listen to midnight (taylor's version) 100 times and you'll understand that she's going to be a-political this election cycle
Replacing Biden with Harris has made a difference in the eyes of Manifold's predictors - the market is now predicting a 59% chance that Swift will endorse a candidate by the end of this month:
@Quroe I would treat that as an endorsement in a first-past-the-post system. If the US switches to a parliamentary system in the next ten months, I will resolve to N/A.