Poland's governing Law and Justice (PiS) party scored 30 per cent support ahead of its liberal archrival Civic Platform (PO), with 28 per cent backing in an opinion poll published Friday, according to DPA. The survey by the independent Warsaw-based CBOS pollsters was the second this week which showed the PiS pulling ahead of the PO and came as legislators were poised to vote on a motion to dissolve parliament Friday. The motion was expected to pass and thus trigger an early general election by October. The left-wing LiD scored 12 per cent in the CBOS poll while the conservative Polish Peasants' Party (PSL) cleared the 5 per cent threshold required to enter parliament. However, the populist Samoobrona farmers' party and the Catholic-nationalist League of Polish Families (LPR) did not. A separate survey by the PBS DGA pollsters published Tuesday also showed the PiS scoring 30 per cent support compared to 26 per cent for the PO. The PO had lead all previous polls with an advantage of at least 5 per cent over nearest rival the PiS. Analysts note that the distribution of votes in both polls rules out a stable independent majority government of 231 legislators for any single party. Taking into consideration ongoing mud-slinging among political rivals, a stable minority government is also highly unlikely, giving rise to the strong probability that chronic instability will continue to plague Polish politics in the wake of a likely general election.