Poland to vote in razor-tight presidential election

Poland votes on Sunday in a hotly contested presidential runoff that will pit the pro-EU Warsaw mayor against a nationalist historian in a tight race that could extend the political deadlock in the NATO member nation. Rafal Trzaskowski, backed by the ruling centrists, and Karol Nawrocki, a political novice supported by the opposition Law and Justice party, are running neck-and-neck in opinion polls. We speak to Radosław Markowski, Professor of Political Science, Polish Academy of Sciences.