It's not a collapse of political opposition. The political opposition are simply not allowing Farrage to dictate the narrative here.
Whilst under investigation for undeclared funding, Farrage is trying to legitimise himself by resigning and having an electorate re-elect him at the expense of the tax payer. The mainstream parties have, understandably refused to play ball, leaving him to regain his existing position uncontested.
But, and this is the bit we are celebrating, Count Binface, a satirical figure, is standing against him, ridiculing him and highlighting in the media the whole selfish situation. This is a backfire for Farrage, as it has nationally pissed on his selfish legitimisation parade.