Democratic incumbent President Lyndon B. Johnson (who took office on November 22, 1963, upon the death of his predecessor, John F. Kennedy) won a full term, defeating Republican Senator Barry Goldwater from Arizona. Johnson won every state except for Arizona and the Deep South. Johnson won 61% of the popular vote, the largest share of the popular vote since 1820. Goldwater won the Republican nomination on the first ballot, defeating Governor William Scranton of Pennsylvania and Governor Nelson Rockefeller of New York.