CNN

From CNN Des Moines affiliate KCCI:

DES MOINES, Iowa – U.S. Sens. and Democratic presidential hopefuls Joe Biden and Christopher Dodd are longtime, respected members of the Senate. But the latest Des Moines Register poll showed them with single-digit support.

Biden and Dodd said they're not concerned about numbers.

"Anyone who can do well here in Iowa can go on. It's more important - not less important," Biden said.

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