In March 2015, Farage declared in his book The Purple Revolution that he would step down as UKIP leader should he not be elected as an MP; he stated his belief that it would not be "credible" for him to lead UKIP without sitting in parliament at Westminster [REF].
Farage was unsuccessful in his bid to become MP for South Thanet[REF] and announced his resignation as the leader of UKIP, citing that he is a "man of his word" since he promised to resign if he did not win his seat.