The leading candidate, Friedrich Merz, a conservative who has adopted many of the AfD’s hard-line positions on immigration, used his closing statement of the debate to promise his voters that he would never allow the AfD into his government. Under him, he said, the firewall would hold.

Vance also gave a speech in Munich, hypocritically scolding Europe’s leaders for many actions Trump has engaged in.

As Dr Weidel took the stage in Halle, the crowd started a chant that was a not-too-subtle play on a Nazi slogan, “Everything for Germany,” a phrase once carved on the knives of Nazi storm troopers. It is banned in Germany.

The vice president met with the leaders of all four major German political parties — including Alice Weidel, leader of the far-right Alternative for Germany.

Concern is growing over the far-right Alternative for Germany party’s rise ahead of the German election. Its U.S. supporters include Elon Musk and JD Vance.

Alice Weidel, has vowed to "chase" the country's other parties if her party goes into opposition. The CDU/CSU centre-right bloc is leading according to initial projects, and its leader Friedrich Merz has repeatedly ruled out a coalition with the AfD.

As an openly gay politician who lives with her Sri Lanka-born partner in Switzerland, Alice Weidel was an unusual choice to many to lead Germany's far-right and anti-immigration AfD into