Hillary's suggestion that Obama serve as her vice president.

From Potomac Watch in The Wall Street Journal:

There's good reason the Hillary and Bill vice-presidential talk is coming at this particular moment. With her Texas and Ohio victories, she's still in the game. But she's behind in the delegate count and, barring some extraordinary event, will remain so. Her path to the nomination instead rests in convincing some 800 unaccountable Democratic superdelegates to deny the nomination to the man who currently has won more states, the majority of the popular vote, and the greater number of pledged delegates.

Success would inevitably lead to screams of a "stolen" primary, and the risk that key Obama voting groups -- blacks, the young, wealthier Democrats -- would stay home. The obvious way to avoid this fallout is to keep Mr. Obama by her side. This is political necessity, not virtue.