May 19, 2009: Assemblyman Curren Price (D-51) wins the special election for the 26th Senate District seat to replace Ridley-Thomas and is sworn in on June 8
September 1, 2009: Councilman Steven Bradford (D-Gardena) wins the special election for the 51st Assembly District seat to replace Price and is sworn in on September 10
September 9, 2009: Assemblyman Michael D. Duvall (R-72) resigns in the wake of a lobbyist sex scandal[1]
January 12, 2010: Supervisor Chris Norby (R-Fullerton) wins the special election for the 72nd Assembly District seat to replace Duvall and is sworn in on January 29
June 8, 2010: Assemblyman Bill Emmerson (R-63) wins the special election for the 37th Senate District seat to replace Benoit and is sworn in on June 9
June 8, 2010: Attorney Mike Gatto (D-Silver Lake) wins the special election for the 43rd Assembly District seat to replace Krekorian and is sworn in on June 10
July 13, 2010: Senator Dave Cox (R-1) dies from prostate cancer
August 17, 2010: Assemblyman Sam Blakeslee (R-33) wins the special election for the 15th Senate District seat to replace Maldonado and is sworn in on August 23
October 20, 2010: Senator Jenny Oropeza (D-28) dies of complications from a blood clot
February 1, 2010: Assemblyman Martin Garrick (R-74) replaces Assemblyman Sam Blakeslee (R-33) as Assembly Republican Leader, as Blakeslee is termed out at the end of the term
March 1, 2010: Assemblyman John Pérez (D-46) replaces Assemblywoman Karen Bass (D-47) as Speaker of the Assembly, as Bass is termed out at the end of the term