European steel buyers and some manufacturers could benefit from 50% U.S. tariffs on the metal, but the potential for the eye-watering duty rate has rocked the already struggling industry. U.S. steel prices are set to climb further as a result of the higher tariff rate expected to come into effect this week,

Mr Nawrocki presented himself as the candidate to hold the government of the prime minister, Donald Tusk, in check.

Poles began voting Sunday in a decisive presidential runoff that could set the course for the nation’s political future and its relations with the European Union.

His rival, Rafal Trzaskowski, the liberal Warsaw mayor and an ally of the government led by Donald Tusk, got 49.11%.

Poland has elected Karol Nawrocki, a nationalist conservative, as its next president — a win that signals a turn to the right in one of the European Union's member states