The party itself is incredibly shallow. It's basically a one man band with 'concerns about immigration' and some vague Thatcherite handwaving.
It's what happens next that's key. Does he effectively merge with the Tories and accept that he's 'won' having changed them and rooted out the wets/liberals, or does he smell the blood in the water and keep going.
They made massive inroads on Thursday, they only won 5 seats but were second in over 100 others, loads of them Northern Labour ones. He'll be targeting them next.