It probably won't kill their party long-term. But, what I hope is that as a result of their losses the coalition breaks down and the libertarian, free market, anti-regulation, pro-immigration, athiest / agnostic wing splits from the christian conservative, pro-tariff, anti-immigrant group.

If that happens and there are 2 conservative parties, first-past-the-post will mean that neither one will get a majority and even in conservative areas the democratic candidate will win.