Why is Iowa in the tank for Obama?

When you think about Iowa, polling and primary results aside, it feels like Iowa should be a red state. It’s a rural, agricultural state, that I would think would be fairly conservative. In fact, according to Dan’s Chart from yesterday, Iowa is 55%R – 45%D.

So why is Obama leading McCain by 10 points in Iowa?

Is this purely a question of support for ethanol, or are there other factors in play here? Why is Iowa so in the tank for Obama?



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