I think now UKIP have proved they are a serious contender for 2020 he will remain leader. He should do as he has no reason to resign unless personally he has had enough which I doubt.
// In the latest extracts from his new book, Mr Farage wrote: “It is frankly just not credible for me to continue to lead the party without a Westminster seat. What credibility would Ukip have in the Commons if others had to enunciate party policy in Parliament and the party leader was only allowed in as a guest?
“Was I supposed to brief Ukip policy from the Westminster Arms? No, if I fail to win South Thanet, it is curtains for me. I will have to step down.” //