One of the first telling primary races is over, and it appears that Blanche Lincoln has narrowly survived a primary challenge in Arkansas. The progressive Dems who fought hard to get rid of a senator who helped kill the public option and might as well be a Republican will be unhappy, but the fact that even with the (tepid) support of the president she only squeaked by with the narrowist of victories sends a signal to other fence-sitting Dems. The bad news: The Republicans will probably pick up this seat in November.