The aim of the article is to analyse Bronisław Komorowski’s standing– a candidate of the Civic Platform party (PO) for the President of the Republic of Poland – on the political market. Komorowski, Marshal of the Sejm (speaker of parliament), could be recognized as a leader-candidate on the presidential election market. After the air crash near Smoleńsk which took the life of the President of the Republic of Poland, Lech Kaczyński, Komorowski concurrently performed three roles: provisional president, speaker of parliament and a (PO) presidential candidate. His chief opponent was Jarosław Kaczyński, the leader of the Law and Justice party (PiS), the twin brother of the passed away president. In the campaign Komorowski built a vision of presidency based on compromise, uniting Poles. In the first round of voting on 20 June 2010 Komorowski earned 41.54% while J. Kaczyński 36.46% of votes. In the second round of voting (run-off) on 4 July 2010 Komorowski received 53.01% while J. Kaczyński 46.99 of votes%. The elections result was a moderate success of the PO party candidate.