Preheat oven to 425°. Sift together flour, sugar, salt, and baking soda into large mixing bowl.
Using a pastry cutter or two knives, work margarine into flour mixture until it resembles coarse meal, then stir in raisins and caraway seeds.
Add egg and soymilk and mix in with a wooden spoon until dough is too stiff to stir. Dust hands with flour, gently kneading until dough is in a ball. Add flour if dough is too sticky but do not over knead. Shape into a round loaf.
Transfer dough to lightly greased cast-iron skillet or a baking sheet. Score top of dough about 1/2" deep in an "X" shape using a knife. Bake until bread is golden, 35-45 minutes. Stick a straw in the center and when it comes out clean, it's done. Cool briefly and serve.