Preheat oven to 350 degrees F. Lightly grease the bottom and halfway up the sides of a 9x5 inch loaf pan. Place prepared loaf pan onto a baking sheet.
In a large bowl, whisk together flour, baking soda, baking powder, and salt.
In another bowl, combine milk, oil, eggs, and vanilla. Mix thoroughly. Beat sugar into mix until it is thoroughly creamed.
Add wet ingredients to the dry ingredients all at once. Stir just until moistened and there are no more traces of flour. Batter may be lumpy, do not over mix. Gently fold in the raisins.
Combine sugar and ground cinnamon to make the cinnamon swirl.
Add 1/3 of the batter to the pan then sprinkle with cinnamon sugar. Add another 1/3 of batter and sprinkle with cinnamon sugar. Finally add remaining batter and top with remaining cinnamon sugar.
Bake in preheated oven for 40 to 50 minutes, until a toothpick inserted into center of the loaf comes out clean. Allow loaf to cool in pan for 10 minutes then remove to a wire rack to cool completely.