In this Oct. 21, 2008, file photo, then-Democratic presidential candidate Sen. Barack Obama, D-Ill. speaks at a rally at Western Gateway Park in Des Moines, Iowa. The president's re-election campaign is increasingly sounding like a nostalgia tour. His speeches stroll through elections past, serving up fond memories of his days running as a political unknown, identifying early political inspirations and reminding voters that, win or lose, this will be his last campaign after 13 appearances on the ballot since 1996. (AP Photo/Alex Brandon, File)

DFO: Do you notice that big "Iowa" sign in the background?I can't think of many things I know about Iowa. Is Des Moines still the capital? Iowa was the setting for "The Music Man." I'm beginning to strain here. Something about corn, too. New Yorkers believe Idaho is Iowa.

Question: What important fact do you know about Iowa?

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