John McCain is a person.
John Sidney McCain III ( born August 29 , 1936 ) is an American politician who currently serves as the senior United States Senator from Arizona . He was the Republican nominee for the 2008 U.S. presidential election . McCain has chaired the Senate Commerce Committee , opposed spending that he considered to be pork barrel , and played a key role in alleviating a crisis over judicial nominations with the bi-partisan group known as the Gang of 14 . McCain ran for the Republican nomination in 2000 but lost a heated primary season contest to George W. Bush of Texas .