Andrea Horwath's visit to the Bombardier plant in Thunder Bay is being slammed by Liberal Michael Gravelle who says she has nerve visiting the plant since she voted against legislation benefiting the facility. The NDP leader calls it a diversion from the real issues and once again challenged Premier McGuinty to take part in next week's leaders debate on northern issues. While in Thunder Bay Horwath announced a new buy Ontario policy that would benefit Bombardier