Maybe he will, maybe he won’t (run, that is) — but Arkansas state Sen. Bob Johnson’s announcement that he is mulling a Democratic primary challenge to U.S. Sen. Blanche Lincoln is an indication that even members of Lincoln’s own party view her as a potential target in 2010.

Johnson announced Friday that he is considering a 2010 bid for Lincoln’s seat, according to the Arkansas News Bureau and Associated Press. Johnson said he has been encouraged to run and indicated that he would position himself as a conservative Democrat in the race.

In Republican eyes, Lincoln is already a target.