Answer: Extremist
Explanation: From the beginning of his campaign, Goldwater fought an uphill battle to unseat an incumbent president under favorable economic circumstances. Goldwater consistently refused to moderate his views, which alienated a significant portion of the more moderate wing of the Republican Party from his campaign. With the assistance of the media, who in large part also had an unfavorable opinion of Goldwater, President Johnson used this fissure in the party to portray him as an extremist.