Taylor Swift has broken her long-held public political silence in an Instagram post encouraging her followers to vote in the November midterm elections and slamming Republican Tennessee representative Marsha Blackburn. “In the past I’ve been reluctant to publicly voice my political opinions, but due to several events in my life and in the world in the past two years, I feel very differently about that now,” Swift began the post, which was accompanied by a moody, black-and-white photo of the superstar. “I always have and always will cast my vote based on which candidate will protect and fight for the...