Buuxi weedhan soo socota: Rivkin wuxuu u adeegay wakiil ka tirsan California Senator John Kerry Shirweynihii Qaranka ee Dimuqraadiga ee 2004 iyo Barack Obama Shirweynihii Qaranka ee Dimuqraadiga ee 2008. Rivkin wuxuu ahaa madaxa maaliyada California ee Obama
Ololaha doorashada madaxtinimada ee 2008 iyo mid kamid ah dadkii ugu badnaa ee lacag ururiyay.