Cook the pasta in boiling salted water until al dente, about 8-10 minutes. Drain and rinse with cold water to stop cooking.

Chop broccoli into small florets, slice the red onion, and prepare bacon if using.

In a mixing bowl, combine mayonnaise, red wine vinegar, and sugar. Whisk until smooth. Season with salt and pepper to taste.

In a mixing bowl, combine pasta, broccoli, red onion, and bacon. Pour dressing over and toss to coat.

Cover and refrigerate for at least 3 hours to allow flavors to meld.

Before serving, stir the salad and add any extra toppings like crumbled bacon.