Wash potatoes, prick with a fork and microwave for 8-10 minutes or until cooked. Set aside to cool.In a medium bowl, toss diced chicken with buffalo sauce until well coated. Set aside.Once potatoes are done, microwave broccoli according to package instructions.While broccoli is cooking, whisk together mayonnaise, vinegar and dill in a small bowl. Set aside.To assemble, slice each potato in half lengthwise. Top each with ½ cup chicken, ½ cup broccoli and about 1 Tbsp. of the dill mayonnaise sauce. Serve.