This highlights the fundamental problem with non-mainstream parties. They appeal to the populace and go to the polls with promises of fixes to the issues which are important to the proverbial 'man in the street', but underlying and vital components such as finance, defence, and international relations of running a country only get superficial and inadequate coverage.
It's one of the reasons I won't vote, and never have voted, for any political party, although I am a member of UKIP and support its aims.
If they gave the other useless bunch a challenge, they've achieved something but there's a risk that they split the vote to the extent that neither mainstream party gets a clear mandate to govern and the result is a weak and useless coalition, the current UK situation being a perfect illustration of that.