Fresh off big primary wins in Delaware and Alaska, national "tea party" groups are redirecting the energy of the movement toward the November midterm elections, raising millions of dollars, expanding their advocacy into dozens of congressional races and building voter turnout operations nationwide.

Leaders of the Atlanta-based Tea Party Patriots said they will announce a seven-figure donation Tuesday, from a yet-unnamed person, that the organization will pour into local tea party groups and get-out-the-vote efforts in some of the most competitive congressional races.

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