Parliamentary elections in May 2010 ended with unexpected and somewhat revolutionary results: they brought heavy losses to all traditional established parties within the Czech party system, which appeared to be relatively stable since the second half of 1990s, two lesser parliamentary parties were eliminated from the Chamber of Deputies, and two new political parties emerged among successful subjects surpassing quite easily the existing electoral clause of five percent. The text analyzes these results, as well as some attitudes of Czech public identified by exit poll and other sociological surveys and post-election development, and it tries to answer the question, whether the elections in 2010 meant any deep and lasting shift in long-term development of the party system in the Czech Republic or whether it was rather an incidental anomaly without persistent impact on the party system, which will gradually restore itself more or less in the shape that characterized it for one and half of decade before the elections in 2010., Jan Červenka., and Obsahuje seznam literatury