Punchbowl News: “With one week until Election Day, the best way to tell which House races remain super tight is to follow the money.”“The top six races for ad spending in the final week are in states with very expensive media markets (New York and Florida) or states with Senate and gubernatorial races driving up ad prices (Michigan and North Carolina).”“But the ad dollars and the party breakdown still tell us a lot about where both parties view the core of the map as Nov. 3 approaches.”The districts to watch: MI-7, MI-10, NC-1, FL-22, FL-25 and NY-17.