Man, that was quick.
The quest to win the presidency at an age when he would be too old to be a commercial airline pilot or even a judge in some states has already led Mr. McCain to adopt a more grueling campaign schedule, and a more vigorous style, than several of his younger rivals. Now that Mr. McCain is the presumptive Republican nominee, political analysts say, his age will most likely factor into his selection of a running mate.
Some suggested Mr. McCain might want to tap a younger running mate to balance the ticket, particularly if he were to face a young opponent like Mr. Obama, 46. Others said his age would simply heighten his need to choose somebody whom voters would feel comfortable with as president should anything happen to him. (Not to be morbid, but eight vice presidents have succeeded presidents who died in office.)