Mayoral hopefuls Lynne Abraham, Nelson Diaz, Jim Kenney, Doug Oliver, Milton Street and Anthony Hardy Williams discuss the themes of leadership and innovation in Philadelphia in a mayoral debate hosted by WHYY on Monday. The candidates spoke about their past roles in various companies and future initiatives that showcase their ability to lead the city. One question of the morning centered on whether government should be run like a business; four of the six candidates said it should be. Abraham…