Add the potatoes to a large pot, and add water to cover them.
4 1/2-5 lbs russet potatoes
Heat on high heat, and boil the potatoes until fork tender. This can take anywhere from 10-20 minutes, depending on the size of the potato.
Transfer the cooked, but not mushy potatoes, to a colander. Run them under cold water to stop the cooking process and to cool them.
Once cool, slice the potatoes into 1/4 inch coins. Add them to a large mixing bowl.
In a separate mixing bowl, add the remaining ingredients. Whisk the dressing together until smooth.
2 cups mayonnaise, 1 tbsp vinegar, 1 tbsp yellow mustard, 1/4 cup chicken broth, 1 1/2 tsp celery salt, pepper
Transfer the dressing to the bowl with the potatoes, and toss to evenly combine/coat.
Serve the potato salad as is, or cover & refrigerate to chill before serving.
Season with salt & pepper, to taste.