But the staff departures come amid questions about Wu’s behavior during the campaign. On Oct. 27, he gave a speech so negative and loud that a Washington County Democratic Party member complained formally to his office.

The outburst was followed two days later by an episode at Portland International Airport, where Wu used his influence as a member of Congress to enter a restricted area and campaign for votes from off-loading passengers. One passenger filed a complaint, and a Transportation Security Administration employee was later required to be retrained for his lapse in letting Wu past security…

In a speech before Washington County Democrats, he blasted his opponent as a telemarketer, The Oregonian as unfair and the Republican candidate for governor as stingy with tips. Wu also disclosed that he stopped drinking July 1.

Phyllis Kirkwood, a Democratic precinct leader in Washington County, was alarmed enough to send Wu a letter after the Oct. 27 event. In it, she said she wanted to hear of his accomplishments, gratitude for their hard work and reasons why they should continue working on his behalf.