Dhameystir weedha soo socota: Aragtida siyaasadeed ee Duvall waxaa si kala duwan loogu tilmaamaa mid xor ah ama mid muxaafid ah. Waxaa si shakhsi ah loogu casuumay caleemo saarka Madaxweynaha Jamhuuriga George W. Bush sanadkii 2001. Bishii Sebtember 2007, wuxuu ku dhawaaqay inuu taageersan yahay murashaxa Madaxweynaha Jamhuuriga ee Rudy Giuliani. Duvall waxa uu ka shaqayn jiray GOP's
2008 shirweynaha qaranka iyo, sida laga soo xigtay August 29, 2008, MSNBC article, Duvall ka hadlay inta badan videos ee shirweynaha. Bishii Sebtember 2008, wuxuu masraxa ka soo muuqday isu soo baxa John McCain iyo Sarah Palin ee New Mexico.