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Political popularity appears to be broad and sustained but, when eventually it is exhausted, the falling away of support is dramatic.
The front-runner to succeed Merkel has perfected the art of making not having a row, indeed not making a decision, sound reasonable.
Because the Chancellor’s coalition its riven by internal disputes, she has lost the authority to knock heads together on Brexit.
The German Chancellor faces a rebellion from her Bavarian allies on the question of immigration – and is pleading for more time before the EU summit.
Merkel has appalled her own followers by making sweeping concessions to the Social Democrats.
The German consensus which placed no significant party to the right of the CDU, thus bolstering it as a governing force, is breaking down.
Tim Montgomerie’s capitalist ideal has a continental underpinning.