Former US President Jimmy Carter said Sunday that Hillary Clinton should abandon her battle for Democratic presidential nomination by early June. Carter told Sky News television that most Democratic party leaders known as superdelegates will have announced whether they support Clinton or her Democratic opponent Barack Obama soon after the last round of primaries finishes early next month. Like about 200 or so other superdelegates, Carter is officially uncommitted. But he suggested the outcome of the race was a foregone conclusion. "I'm a superdelegate, having been president before, and I think that a lot of us superdelegates will make a decision ... quite rapidly, after the final primary on June 3," Carter told Sky News. "I think at that point it will be time for her to give it up." Clinton and Obama need 2,026 delegates to secure their party's presidential nomination. Obama has a total of 1,974 delegates, giving him an almost insurmountable lead over Clinton, who has 1,779. But Clinton has so far refused to bow out of the race.