The Government of Portland, Oregon is based on a city commission government system. Elected officials include the mayor, commissioners, and a city auditor. The mayor and commissioners (members of City Council) are responsible for legislative policy and oversee the various bureaus that oversee the day-to-day operation of the city. Portland began using a commission form of government in 1913 following a public vote on May 3 of that year. Each elected official serves a four-year term, without term limits. Each city council member is elected at-large.