Beyoncé, JLo, Shakira, Rihanna, etc are women of color (a demo that skews strongly towards democrats).
Gaga is too "kumbaya let's all love each other" to ever support Donald's rhetoric.
Taylor's enough of a feminist to be outraged by Donald's behavior towards women, if nothing else.
But I guess it's hard to say, really, where they would stand if they'd followed different life paths. If they'd gone to college instead of pursued music careers, they'd probably support Hillary (who is doing well with college educated women, and women in general)...
Katy comes from an Evangelical background, which I suppose might mean that she'd be more likely to support Republicans if she had lived a normal (church-going) life, but even the Evangelicals are turning against Donald.
I'd say Taylor and Britney. Katy is questionable though but Idk she seems like the type of girls that is brought up Christian but is exposed in college to truth and logic.. Idk
Screaming @ 8 votes for Katy when she's been the most genuinely invested in Hillary's campaign, even delaying her album and sabotaging Rise's Olympics deal just to help support and promote her.