For starters, who knows who will open the letter and forge an endorsement?

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Tara Wall, the deputy editorial editor of the Washington Times, said that moderate and conservative Republicans have been skirmishing throughout this election year, and that the Powell endorsement had brought that fight into the open.

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Mr. Camp will only say that Mr. Baucus is "open-minded" on tax reform, hardly a hearty endorsement.

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It teetered on an endorsement of a 2016 presidential bid that is still an open question.

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Michelle Wie, the former phenom who made the cut at a U.S. Women's Open at 13, turned pro at 15 and signed eight-figure endorsement deals, is a prime example.

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