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Higher prices for witches’ outfits may not cause a riot in the aisles of your local supermarket, but they do contain a lesson. Tariffs (a tax on goods) raise money for the U.S. government (bills fall due in seven to 10 days, Smeaton told me). They also push up inflation across all goods affected, from Superman outfits to fridge-freezers. Cost-of-living effects have a direct read-through to the polls.