History hangs heavily over Makerfield. The Battle of Waterloo was fought on 18 June 1815, and Britain’s political class has now chosen 18 June as polling day for the Makerfield by-election — inviting comparisons they can hardly have failed to notice. The fall of an emperor? The ascent of a new prince? Or simply a bruising political mess? On the 211th anniversary of Waterloo, several endings remain possible. This by-election exists for one reason above all: to try to return Greater Manchester Mayor Andy Burnham to…