Polish Prime Minister Donald Tusk, center, shakes hands with a voter in front of a polling station as his wife Malgorzata, left, and daughter Katarzyna, right, look on during the parliamentary elections in Warsaw, Poland, Sunday, Oct. 9, 2011. Poles are voting to determine whether the centrist Civic Platform party will win another term after four years of strong economic growth. But Prime Minister Donald Tusk's party is facing a tough challenge from Law and Justice, the conservative party of Jaroslaw Kaczynski. (AP Photo/Alik Keplicz)