Here are the candidates pitches to Democracy for America

Hillary Clinton brings in a progressive hero to make her case for her.
Howard Dean founded DFA and is a Clinton supporter. But the group will go its own way on the endorsement — if Sanders gets more votes, he’ll get the backing of DFA. But Clinton is taking advantage of the situation. Her letter to DFA members is “forwarded” to them by Dean, who sings her praises.

(There's also her letter which repeats her claim of "taking a back seat to no one....&quot

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Bernie Sanders brings the wonkery.

Sanders has drawn huge crowds and millions of dollars in small-dollar donations with his issues-focused, eat-your-vegetables campaign. His stump speech is nearly an hour long (sometimes more) and Sanders is known for filing detailed legislation to show how many of his proposals would work and be paid for. He takes a similar approach in his letter to DFA — it’s the longest of the three by a significant margin.

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Martin O’Malley goes with the progressive bad boy look.

O’Malley’s email brings the contrast, and drops the H-bomb.

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http://www.buzzfeed.com/evanmcsan/courting-the-left#.kyyjJWz1R