A demonstration calling for President Komorowski not to sign off on a new law allowing GM seeds to be used in Poland took place in Warsaw over the weekend. On 31 July 2011 the Senate, the upper house of parliament, voted to pass into law the ‘Seeds Act’, which legalises the planting of GM seeds in Poland. The vote went through parliament after MPs and senators from the ruling coalition of Civic Platform and Polish Peasant Party supported the bill.