While much has been written about the O Street home of Massachusetts Sen. John Kerry (or should DCist say Teresa Heinz Kerry?), the West End Guide has the skinny on the home of Kerry’s vice presidential nominee, Sen. John Edwards of North Carolina. His home, built around 1830, is just a block away on P Street. It is currently assessed at $3.7 million. The Edwards bought the Georgetown home after selling a seven-bedroom 30th Street…