Bush tells friends he won't try to hog the spotlight after the next Republican presidential nominee is decided, because the new GOP leader will need to establish his own relationship with voters. The president "has no problem with that," says a top-level party strategist. But some Bush advisers say their boss could get his back up if the GOP pick puts too much distance between himself and the administration. On the other side of the equation, a strategist for a GOP presidential candidate says there is such a demand for change in the country that the eventual standard-bearer will have to "break from the past." Posing the dilemma: "How do the Republican nominee and the Republican president coexist?"