 She was elected to the Sejm on 25 September 2005, getting 4,615 votes in 19 – Warsaw II district, as a candidate from the Civic Platform list.She was elected again following Donald Tusk's victory on 21 October 2007, after achieving 13,057 votes.In 2010, Kidawa-Błońska became the press spokeswoman for Bronisław Komorowski's presidential campaign.