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 . Elected to the U.S. House of Representatives in 1982 , McCain served two terms . He was first elected to the U.S. Senate in 1986 , winning re-election easily five times , most recently in 2016 . He secured the nomination in 2008 after coming back from early reversals , but was defeated by Democratic candidate Barack Obama in the general election , losing by a 365 -- 173 electoral college margin and by 53 -- 46 % in the popular vote .