A historian and populist firebrand who boasted about his brawls with soccer hooligans has narrowly won Poland’s presidential election, in a political upset that could torpedo the centrist government’s efforts to unspool the legacy of authoritarianism in the country.

Karol Nawrocki, the right-wing candidate in Poland’s presidential runoff election, won on Sunday night and will be the country’s next president. Nawrocki defeated Rafał Trzaskowski by the slimmest of margins,

Conservative Karol Nawrocki, who has no political experience, won the presidential election, in a major success for the MAGA movement.