In a large container or bowl, combine the sour orange juice (or orange/lime juice blend), garlic, salt, and pepper. Add the chicken pieces, turning to coat. Cover and refrigerate for 1 to 2 hours, but not longer.
Add the wine allowing it to deglaze the pan, about 2 minutes. Add the reserved marinade, tomato sauce, 1/2 tsp salt, capers (if using), olives, raisins, potatoes, and chicken. Nestle chicken into sauce. Heat to almost boiling.
Reduce heat to low, cover, and simmer for 35-40 minutes (turning chicken halfway through) or until the chicken is fully cooked and the potatoes are soft. Season with additional salt and pepper, if needed.
Prep time above based on 1 hour marinade time