BERLIN (Reuters) - The leader of the far-right Alternative for Germany (AfD), the second largest party in parliament after Sunday's election, said Germany's likely next chancellor would be held hostage by left-wing parties that would seek to loosen tough fiscal rules.

Weidel said voters had delivered a “clear majority” for a coalition with the AfD, which came second, and the winning Christian Democrats (CDU). But CDU leader Friedrich Merz has ruled out a coalition with the far-right party.

Polls are open across Germany as the world’s third largest economy chooses a new leader to guide it through an era of febrile immigration debates and souring relations with Washington.