Donald Franciszek Tusk is a conservative-liberal Polish politician, co-founder and chairman of the Civic Platform , and the Prime Minister of the Republic of Poland.

Tusk was officially designated the Prime Minister on November 9 and took office on November 16. He couldn't be certified as Prime Minister as soon as possible, since the brother of leader of the opposition, President Lech Kaczyński, couldn't agree with his brother's loss. His cabinet won the vote of confidence in the Sejm on November 24, 2007.