(Salem, OR)  --  Oregon's presidential primary is set for next Tuesday, and Democratic presidential candidate Bernie Sanders made another campaign stop last night in Oregon in an effort to galvanize the support for his run.  The Vermont senator picked up a primary win in West Virgina last night as he held a rally in Salem.   Sanders says he still has a path to the Democratic nomination if he does well in Oregon and other states in the coming weeks.  An Oregon Public Broadcasting poll shows fellow Democratic candidate Hillary Clinton is leading Sanders in Oregon by 15 percentage points.