Liberal Warsaw Mayor Rafal Trzaskowski and a conservative historian, Karol Nawrocki, emerged as the front-runners in Poland's presidential election Sunday, according to an exit poll, putting them on track to face off in a second round in two weeks.

WARSAW, Poland (AP) — Liberal Warsaw Mayor Rafal Trzaskowski and a conservative historian, Karol Nawrocki, emerged as the front-runners in Poland’s presidential election Sunday, according to an exit poll, putting them on track to face off in a second round in two weeks.

A late exit poll by the Ipsos institute released three hours after polls closed showed Trzaskowski with an estimated 31.1 percent of the votes and Nawrocki with 29.1 percent. That suggested that the runoff on June 1 could be very tight. Official results are expected on Monday or Tuesday.