Briefing Why a Merkel victory in Germany's elections isn't a sure thing

The chancellor remains immensely popular among the public, but the German electoral system means that she still faces hurdles in this weekend's election.

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Germans overwhelmingly support their current chancellor, Angela Merkel, in her bid for re-election. She polls in popularity at double that of her closest rival, Peer Steinbrück. So the federal elections on Sept. 22 in Germany are yawner, right?