Preheat oven to 375.
Line muffin pan with liners.
Whisk together flour, baking powder and salt. Set aside.
Cream together butter and sugar until fluffy.
Beat in eggs and vanilla
Add in flour mixture and milk gradually alternating between them.
Fill each liner 2/3 full and bake for 18 minutes of until toothpick inserted in middle comes out clean.
Allow to cool.
Whip butter,vanilla and gradually add powdered sugar.
Add milk until you reach desired consistency.
Prepare a piping bag and fold the bag down over a cup.
Using a toothpick draw several red and blue lines up the sides of the bag.
Transfer frosting to piping bag and frost each cupcake.
Cut Twizzlers into approximately 2" pieces and insert in middle peeling a little at the top for effect.