Portland became the nation's largest city with an openly gay mayor Thursday as a longtime City Hall insider took the oath of office.

Sam Adams, 45, was sworn into office at 12:01 a.m. New Year's Day at City Hall during a ceremony attended by a crowd of about 40 that included his mother and his partner.

Adams won the job seven months ago in a primary race by capturing 58 percent of the vote and therefore negating the need for a runoff election.

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