I warned earlier of the dangers of investing too much hope in UKIP as a vehicle for immigration dissent. As a part with a limited, clearly defined and actually achievable objective, it was always doubtful whether it would be in it for the long term. Now that its objective has, in fact, been achieved, that doubt looms with sudden new force. It's clear that the main gripe of UKIP and Brexit supporters was immigration, not the EU per se. Now, depending on who the next leader of UKIP is, those people may well find they have nowhere left to go.
There are clearly some in the party who have wanted to turn it away from any hint of ethnonationalism. Douglas Carswell is the most prominent of these. From the very first, he has disparaged the anti-immigration sentiments of the "angry nativists", who were, in fact, the bulk of UKIP supporters. If he wins the leadership now, UKIP is gone as a vehicle for resisting the immigration genocide. Its support will dwindle and it will vanish before long. Carswell posted a smiley face in response to the news of Farage's resignation.
Other likely contenders include Suzanne Evans, although she is currently suspended from the party so may not be able to stand. She has apparently been working for Carswell so I doubt much is to be expected from her.
Steven Woolfe will probably be another of the leadership challengers. He has been the immigration spokesman and performs very well in speaking and debate. I believe I heard him say he is a half or quarter negro, although it is not obvious from looking at him. This has some positive value in that it helps insulate him from the inevitable charges of racism.
Paul Nuttall may well also make a bid. He is probably the most sound on the issues, from our perspective. But he lacks charisma, and his northern accent and proletarian origins will be off-putting to many of UKIP's supporters in the south of England. It may help them capture Labour's voters in the north, however.