Back in July 2007, John Heilemann, a writer for New York magazine and an alumnus of this newspaper, argued that it was possible to imagine John McCain winning the Republican nomination-but only if you had been fortified by "half a bottle of Maker's Mark, followed by a nitrous-oxide chaser". Mr McCain is now back. But a bigger question remains. Do you need to partake of Mr Heilemann's chemical cocktail to believe that the Republican nomination is worth having? The Republicans look like dead men walking. Almost two-thirds of Americans regard the Iraq war as a mistake. A similar proportion think that the country is on the wrong track. Americans regard the Democrats as more competent than Republicans by a margin of five to three and more ethical by a margin of two to one. They prefer Democratic policies on everything from healthcare to taxes.
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