Sarah Palin campaigned for vice presidency alongside a presidential candidate who was a senator from Arizona.
John Sidney McCain III ( born August 29 , 1936 ) is an American politician who currently serves as the senior United States Senator from Arizona . Sarah Palin . As the Republican Party nominee for Vice President of the United States in the 2008 election alongside presidential nominee , Arizona Senator John McCain , she was the first Alaskan on the national ticket of a major political party and the first Republican woman selected as a vice presidential candidate . Sarah Palin 's candidacy for Vice President of the United States was publicly announced by then-presumptive Republican Party presidential candidate John McCain on August 29 , 2008 .