(Portland, OR)  --  Democratic presidential candidate Bernie Sanders is adding a visit to Portland to his scheduled return to the Northwest.  The Vermont senator is slated to hold a rally tomorrow at the Moda Center at 9:45 in the morning.  He'll hold a rally tomorrow afternoon at Safeco Field in Seattle.  Sanders will be back in Spokane today for a rally at the Spokane Arena, and is scheduled to appear at the Yakima Valley SunDome at four o'clock this afternoon.