The Pirate Party are not going to win the election. They are radical extremists. Well this is just my opinion, but lets check back next week after the vote.
Obviously no party will take the majority of the vote. So what is your criteria for winning or losing? Even if the pirates election results were 5-10% less than the polling numbers they'd still have 'won' by some measurements since they'd have more seats in parliament than they did last time.