Broder’s take on the Michigan 7 race: “[Joe] Schwarz, a physician and freshman House member who had headed the John McCain forces in Michigan, fell victim to a heavily financed right-wing effort to punish him for his support of stem cell research.” I’m sorry, but that’s just nuts. The Club for Growth didn’t get into the race over stem cells. The issue divided the candidates, but what’s the evidence that it was more important than the other issues–taxes, abortion, guns–that divided them? Have stem cells played this kind of role in any other primary? I would love to be able to say that supporting embryo-killing stem-cell research was a ticket to primary defeat in the Republican party, but I don’t see any evidence that it’s true.