None of these parties are as bad as the 'center-right' parties that actually win elections and form governments in Europe/Israel/Australia. They provide a useful 'devil' for the existing political classes of those nations, of course. That's not saying I would ever vote for one of them, but I would be far more worried about the Conservative Party winning another election in the UK than I would the BNP scrounging up enough votes to take one seat.
What if these parties actually had good chances to win? Would you actually prefer them over the mainstream right parties? Sorry if I ask, but I've noticed a recent trend among my fellow forum leftists that worries me a bit.
And what would that trend be, if you don't mind me asking? As for the question, I am not sure I would bother casting a ballot if my choices were between folks who want to rob me blind and folks that want to deport all foreigners.
Marokai recently said he would support Le Pen over Hollande in France's 2012 election, which made my jaw drop. We've since clarified things a bit and I think he's at least partly changed his view, but that made me wonder if other forumites politically close to me share this view.
I would say that at least in the case of Jobbik and XA, "deport all foreigners" is probably the nicest of their stances.