Kammala jumla mai zuwa: Rivkin ya yi aiki a matsayin wakilin California mai girma ga Sanata John Kerry a taron kasa na Jam'iyyar Democrat na 2004 da kuma Barack Obama a taron kasa na Democrat na 2008. Rivkin ya kasance California kudi co-shugaban ga Obama ta
Gasar zaben shugaban kasa ta 2008 da kuma daya daga cikin manyan masu tara kudi.