Sanders, Clinton set tone for leadoff presidential caucuses

DES MOINES, Iowa (AP) — Bernie Sanders sharpened the contrast with Hillary Rodham Clinton on a bevy of liberal causes on Saturday, casting himself as a principled progressive before thousands of Iowa Democrats in an appearance that could set the tone for the leadoff presidential caucuses in February.

Sanders, the independent Vermont senator, never mentioned Clinton by name at the high-profile fundraising dinner but implicitly criticized her delayed opposition to the Trans-Pacific Partnership and Keystone XL pipeline as well as her vote in favor of the Iraq war and passage of the Defense of Marriage Act during her husband's administration.

"I promise you tonight as your president I will govern based on principle not poll numbers," Sanders said, eliciting roars from his supporters.

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