According to a group that monitors election spending, more than one-fifth of political TV advertising nationally, from July to October, was in Pennsylvania. Global’s Mike Armstrong reports from Harrisburg on why the state is so crucial for both candidates. Last minute talks to avoid a shutdown of Canada Post are underway. The union representing 55,000 workers could give 72-hour strike notice at any moment — which means a strike could come as soon as Monday. As Mackenzie Gray reports, a strike would have ripple effects throughout the economy.