Conservative leaders across the continent congratulated Ulrich Siegmund and the AfD for the landslide victory on Sunday.

Five years of political isolation, institutional pressure, and debate over banning the party have failed to halt the AfD, which rose from 20.8% to 43.8% in Sunday’s election.

Reform set out how—in the face of establishment opposition—it would fix a broken Britain. A media sting on the eve of the conference gave the party a timely reminder of what it must deal with.