Poland's government has been plunged into crisis, after Prime Minister Jaroslaw Kaczynski fired his left-wing deputy Andrzej Lepper. Kaczynski's Law and Justice Party is 76 seats short of a majority, and relies on the 56 votes of Lepper's Samoobrona Party to form the core of its governing coalition. Without those votes, they will either have to form a coalition with the Civic Platform (who they don't get along with), rely on getting enough breakaway MPs from Samoobrona, or call new elections.
The latter may be what they are after; back in January Law and Justice appeared to want to use a budget crisis to force an early poll in order to improve their position in the legislature. They may be playing the same game here.