Duvall 's political views are variously described as libertarian or conservative . He was personally invited to Republican President George W. Bush 's inauguration in 2001 . In September 2007 , he announced his support for Republican Presidential candidate Rudy Giuliani . Duvall worked the floor at the GOP 's 2008 national convention and , according to an August 29 , 2008 , MSNBC article , Duvall narrated most of the videos for the convention . In September 2008 , he appeared onstage at a John McCain – Sarah Palin rally in New Mexico
2008 national convention
2008 Republican National Convention
Robert Duvall