Preheat oven to 425ºF.
In a medium size bowl, sift together dry ingredients. with pastry blender or knife, cut in margarine until mixture resembles coarse oatmeal. Add raisins and stir to mix. Make a well in center of flour mixture. Pour in milk. Stir rapidly with spatula until dough is just moist enough to leave sides of bowl to form a ball. Knead dough lightly 10 - 15 times, then roll or pat out on floured surface to 1/2 inch thickness. Cut into circles with biscuit cutter. Fit close together on non-stick baking sheet. Bake 10 - 15 minutes or until golden brown. Transfer to cooling racks. Makes 1 dozen biscuits.