Add John Edwards to the list.
The former North Carolina senator and fellow presidential candidate Barack Obama on Saturday joined three other Democrats who pledge to skip states that break party rules by holding early primaries.
Hillary Rodham Clinton is now alone in planning to compete in Florida and Michigan.
The decision by Obama and Edwards is a major boost to the primacy of the four early voting states of Iowa, New Hampshire, Nevada and South Carolina.
It's also a welcome development to the Democratic National Committee, which has tried to impose discipline on a handful of unruly states determined to vote before Feb. 5.
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