The singer joined a wave of artists who have backed out of the event organized by Keith Krach, a Trump appointee Following the uproar over the “ Great American State Fair ” lineup, Martina McBride has joined a growing list of musicians who are backing out of the event after learning it’s more partisan than they originally thought. Trending Stories In a statement posted to social media, McBride took a moment to clear the air. “I will not be performing at the Great American State Fair on June 25th,” the singer-songwriter announced. She said that while she was “presented with an opportunity to perform at a nonpartisan event,” the supposed show “turned out to be misleading.” McBride said that after asking “lots of questions,” she was “assured this was a nonpartisan event that was meant to celebrate ALL 50 states.” She continued, “In my mind I thought this was a great way to celebrate the states and also bring people together in the way that only music can.…