On 10 April 2010 , its former leader Lech Kaczyński died in the 2010 Polish Air Force Tu-154 crash . Jarosław Kaczyński becomes the sole leader of the party . He was the presidential candidate in the 2010 elections , and lost again in the 2011 general election
2010 Polish Air Force Tu-154 crash
2010 Polish Air Force Tu-154 crash
Law and Justice