by-elections to the Senate were held in Poland on 20 June 2010 , at the same time as the presidential election . They were held to replace Krystyna Bochenek in Katowice ( Civic Platform ) , Janina Fetlińska in Płock and Stanisław Zając in Krosno ( both Law and Justice ) , who died in the 2010 Polish Air Force Tu-154 crash on 10 April 2010
2010 Polish Air Force Tu-154 crash
2010 Polish Air Force Tu-154 crash
2010 Polish Senate by-elections