I don't think so, and last time she said it because they asked her in an interview.
TSwift is frankly a large enough celebrity that saying anything political could easily cost her millions of dollars, so while I do kinda wish she'd say things I agree with I also recognize that there's really no incentive for her to do so.
They all do this. Pretty much all celebrities endorse the Democrat politicians because it looks better for them. It looks like they're "just one of us!" When in fact, they are not. Taylor Swift was born into wealth, and does not need to worry about who's President...it will never effect her. But by endorsing the side of the "poor" and "common working class"...she gets even more positive publicity..