In Maryland, Gov. Martin O’Malley looks pretty comfortable in a hypothetical match-up against his predecessor, Robert Ehrlich, leading 48 percent to 39 percent.

But his approval rating is a pretty “meh” 46 percent, with 36 percent disapproval. These days, that counts as good news for a Democrat incumbent, but I’d be a little concerned if I were on Team O’Malley.

Ehrlich is reportedly still thinking about a run; I’d note that there’s not much reason to think that he would have an easier shot four years from now.