You could work backwards by looking at how the "Brexit party" managed to split and regenerate from UKIP to run a campaign across all the Euro election seats in a matter of months. Where did that come from? They claim to have raised ""£750,000 in donations online, all in small sums of less than £500" in their first ten days"; given that Farage is currently under investigation for his funding https://www.theguardian.com/politics/2019/may/21/eu-investig... , it might be worth considering alternative explanations.