To make the dressing, in a small bowl whisk together the olive oil, sugar, white wine vinegar, chili powder, and salt to taste (I like 1 teaspoon).
In a large bowl, add tomatoes, black-eyed peas, black beans, corn, red onion, bell peppers, and cilantro. Drizzle with the dressing and stir to combine. Cover and chill until serving time.
