sentences:  The early elections were a result of serious allegations of massive corruption on the part of Andrzej Lepper, leader of the Self-Defense of the Republic of Poland, whose party served as a junior coalition partner to the government of Prime Minister Jarosław Kaczyński.All 460 seats in the Sejm and all 100 seats in the Senate were up for election.The election was won by the largest opposition group, Civic Platform (PO), which soundly defeated the ruling Law and Justice (PiS) party and its allies.