Supreme Court Justice John Paul Stevens has stated that he is about to retire. And of course President Barack Obama will appoint a successor. While many conservatives are gearing up to fight if Obama appoints a very liberal successor to Justice Stevens, I'm not really going to get all agitated.
Why? Because Justice Stevens is just about the most liberal judge on the current court. And so, short of appointing a Communist, Pres. Obama cannot really affect the Court's direction, at least in a leftward turn, by his appointment. And he's not likely to try to move the Court in a rightward direction. So there is no hope that he would do that.
And thus, there is really no reason to worry too much.