While Senator John F. Kerry is "profoundly disappointed" with losing his presidential race last week, it is "conceivable" he will run again in four years, his brother and political confidant, Cameron F. Kerry, said yesterday.[snip]Former aides said they have received conflicting answers about whether he might wage another campaign. One, speaking on the condition of anonymity, said Kerry told a top campaign official he could not envision another run. Yet that same adviser attended a farewell party for Kerry's staff Saturday night in Washington and said Kerry told the crowd, "There's always another four years."[snip]Such a run could pose a...