ex-ČSSD Independent MP Miloš Melčák filed a complaint with the Constitutional Court, on the grounds that he had a right to sit in parliament for a full term, and the election was postponed while the court examined the legality of the law setting the election date. A hearing was scheduled for 10 September 2009; if the court ruled against the complaint at that hearing, elections would be held as planned, but politicians agreed that they would rather change the constitution to simplify the procedure of calling early elections, and using the new provisions, the election would be held with a delay of at most one month, regardless of the court's decision, most likely on 6–7 November. However, the Constitutional Court viewed the constitutional amendment calling for one-off early elections as a retroactive decision in violation of the existing constitutional procedures regulating early elections, and struck down the act on the grounds that it violated the procedure for constitutional amendments, the right to vote, and the inalienable principle of a law-abiding state. As the Court ruled the election date invalid, the laws (a constitutional amendment and a law shortening election deadlines) were passed on 11 September as planned. President Klaus signed the laws on 12 September, and parliament planned to dissolve itself on 15 September. Melčák stated, however, that he would likely file another complaint if this plan went ahead. In a surprise move, ČSSD announced on 15 September that it would not vote in favour of dissolution, as the new law was likely to be challenged by Melčák again, and this would again call the legality of the election into question; they were now in favour of elections in mid-2010, on the initially scheduled dates. ČSSD had 71 seats and needed ten more MPs to support their position to delay the election, but it was considered likely that they would succeed in blocking the election. The Christian and Democratic Union (KDU-ČSL) also withdrew their support for early elections, meaning the election would be held in May 2010. Following controversial comments about the Catholic Church, Jews and homosexuals, ODS chairman Topolánek withdrew from the election and resigned as party leader on 26 March 2010. He was replaced by Petr Nečas. Contesting political parties and candidates Campaign Issues that featured heavily in the campaign included the Greek government-debt crisis, the global financial crisis, the possibility of national bankruptcy, and corruption. Civic Democratic