E.J. Dionne:

The most striking critiques of Hillary Clinton's presidential campaign have come not from her opponents or her enemies, but from her most loyal friends.

Since December, I have been hearing a steady stream of worries from Clinton partisans who took Barack Obama's challenge seriously from the start. These loyalists felt her campaign was misreading the nature of the political year, the state of the Democratic Party, the organizational requirements of a long struggle for the nomination, and the complexity of the party's attitudes toward both the candidate herself and former President Clinton.

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