Based on an ordinance authored by Supervisors Knabe and Yaroslavsky that took effect in April 2007, the CEO directly oversees departments on behalf of the supervisors, although the Los Angeles County Fire Department, Los Angeles County Sheriff's Department, Assessor, District Attorney, Auditor-Controller, and Executive Office of the Board of Supervisors continue to be under the direct purview of the Board of Supervisors. The change was made in response to several candidates either dropping out or declining to accept the position to replace former Chief Administrative Officer David Janssen. Antonovich was the lone supervisor to oppose the change, stating that such a move would lead to a more autocratic form of government and disenfranchise the 1.3 million who live in unincorporated areas.