Sean Wallentine

After the resignation of Barbara Alby on December 31, 2010, Wallentine was sworn in as acting Member of the Board of Equalization to serve until Runner took office on January 3, 2011, at which point he became Runner's Chief Deputy at the Board. Consequently, Wallentine became the record-holder for the shortest tenure of a California constitutional officer, surpassing Governor Milton Latham, who held the record for 150 years.

Upon graduating from UCLA, Wallentine joined the victorious campaign of California State Assembly candidate Jim Morrissey and became a member of Morrissey's staff as his Legislative Director in the California State Capitol. He joined the Dole-Kemp campaign for President in 1996. In 1997, Wallentine became Chief of Staff to Assemblyman Roy Ashburn. During his tenure there, he also served as a consultant for Chris Mitchum for Assembly in 1998 and as an associate with Steve Presson Associates in 2000.

Born in Lynwood, California, Wallentine served as a member of the United States Marine Corps Reserve from 1988 to 1994. During his time with the Marine Corps, he was on active duty during Operation Desert Shield and Operation Desert Storm. In 1994, Wallentine completed his service in the Marine Corps and also graduated from UCLA, earning his Bachelor of Arts in history.

Sean Wallentine (born September 26, 1970) is a Republican former acting Member of the California State Board of Equalization, representing the 2nd District, holding office for three days from Friday, December 31, 2010 to Monday, January 3, 2011. Consequently, he is the record-holder for the shortest tenure of a California constitutional officer, surpassing Governor Milton Latham, who held the record (with five days' tenure) for 150 years.