There have been studies, and wines that have been organically produced have much less residue than conventionally farmed ones. You can draw a correlation that organic wine is healthier for you.
Organic Wine is wine without added sulfites. Under the USDA National Organic Program, sulfites are a synthetic food additive. They are not allowed in organic wine or any other certified organic food products, such as dried fruits, jams, salad dressings or juices.