I Think that Poland is one of the country where people choose better their politicians. It is like an oasis in a European Union that is destroying itself from inside by left-wing politicians.
It is just amazing to see that the Leftist party (SLD) have barely 4% of the parliament. When you compare with countries like France or UK (not even talking about Greece, they are the worst case), that are ruining their economies and destroying their own culture with the leftist myth that illegal immigrants are nice and cute, you see how wise and smart the voters in Poland are.
My analysis of each party:
PO / Platforma Obywatelska : In the paper they have great economic ideas (privatization, tax reduction, free market stimulus, cut government spending on welfare, etc), but unfortunately their government is not making all those great ideas reality. On the social issues, they are also great. The fact that they defend polish culture as a catholic country shows that, at least in this point, the party have condition to defend Poland from the external menaces.
PiS / Prawo i Sprawiedliwość: They are not as wise as PO in terms of economy (which means less favourable to a free market, but at least they are anti-socialist). I would not vote for them if i was polish, but they are far away of be so bad as people say. One good point is that they are not afraid of critics when it comes to defend polish culture and heritage against the socialist-atheist that just want to turn poland into another dump.
SLD / Sojusz Lewicy Demokratycznej: The main left-wing party, full of ex-communists that want back their privileges at the cost of the people. They just miss the old soviet times when they were rich enslaving people under the Socialist regime, and kidnapping or jailing all opposition. Fortunatelly they don't have many votes, otherwise they could destroy poland in few years with they backwards ideas.
United Poland / Solidarna Polska: They have good intentions, but stupid and ignorant ideas of how to develop a country.
Polish Peoples Party / Polskie Stronnictwo Ludowe: Mainly stupid ideas, like spend money subsidizing companies that are inneficient, altought, it is not as bad as most european leftist parties.
Your Movement / Twoj Ruch: Another party full of left-wing "intellectuals" that doesn't understand bollocks about economy and doesn't care nothing about poland, besides their own pockets. Fortunatelly they are small, since poles are wise enough to see the truth behind them.