Polish President Bronislaw Komorowski conceded defeat after an exit poll indicated he fell behind conservative challenger Anderzej Duda by six percentage points in the country's presidential election on Sunday. The exit poll showed 43-year-old Duda leading Komorowski in the run-off vote 53 percent to 47 percent, but official results are not expected until late on Monday. The poll was delayed after a woman died at a polling station over the weekend. "I wish my challenger a successful presidency," Komorowski told supporters in Warsaw. The 62-year-old president was considered the favorite to Duda, a member of the right-wing opposition Law and Justice Party.