Preheat the oven to 400˚F. Line muffin pan with paper liners.
In a large bowl, mix together the sugars, oil, eggs, pumpkin, water and vanilla.
In a separate bowl, sift together the flour, baking powder, baking soda, allspice, cinnamon, nutmeg and salt. Slowly add it to the pumpkin mixture and mix until fully incorporated. Fold in the raisins.
Scoop batter into the prepared muffin pan and bake for 15 minutes, or until toothpick inserted comes out clean. Let cool on a wire rack.