(Portland, OR)  --  Eight candidates for Portland mayor are hoping they made a good impression during last night's debate at Revolution Hall.  "The Oregonian" had invited only state Treasurer Ted Wheeler and Multnomah County Commissioner Jules Bailey to the debate last night, but that event was cancelled Sunday night over concerns surrounding threats by protesters to disrupt it.  The event was resurrected on a larger scale after it was agreed that six lesser-known candidates would join the discussion.  The primary election will be held May 17th.