UPDATE: NBC News projects Mitt Romney as the winner in Idaho (11:12 p.m. ET)
UPDATE: NBC News projects Rick Santorum as the winner in North Dakota (10:30 p.m. ET)
UPDATE: NBC News projects Rick Santorum as the winner in Oklahoma (8:46 p.m. ET)
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UPDATE: NBC News projects Mitt Romney as the winner in Idaho (11:12 p.m. ET)UPDATE: NBC News projects Rick Santorum as the winner in North Dakota (10:30

UPDATE: NBC News projects Mitt Romney as the winner in Idaho (11:12 p.m. ET)
UPDATE: NBC News projects Rick Santorum as the winner in North Dakota (10:30 p.m. ET)
UPDATE: NBC News projects Rick Santorum as the winner in Oklahoma (8:46 p.m. ET)