Quarter of an hour ago, her instagram account posted the following:
She performed at the 2008 Republican convention but apparently voted for Obama.
Which is probably why she hasn't revealed how she voting backed a particular side at a rally.
Unlike Perry or Beyonce, Swift's popularity probably breaks across both party lines which is difficult in such a partisan country. Saying she's a Republican immediately alienates her Liberal fans (not to mention some of her celebrity friends). Appearing at a Clinton rally could lead to her receiving a measure of the treatment the Dixie Chicks have received.
So for entirely understandable reasons she's kept shtum.
That means I can assume she voted for Hillary and carry on enjoying her music.
Updated 17/11/2016 She voted for Hillary. I can start listening to 1989 again guilt free.