In the RealClearPolitics poll average, Obama’s disapproval rating has reached an all-time high (48 percent), and his approval score, an all-time low (46.1 percent). Whatever he is doing — mainly attacking Republicans, BP, and Wall Street — isn’t working. You wonder how many Democratic candidates will have him in their ads. I’m betting many more Republicans than Democrats will be doing that. After all, the most critical factor in midterm congressional races is the political standing of the incumbent president. Right now, it looks like a tsunami is heading the Democrats’ way.