03/18/2010 05:12 am ET | Updated May 25, 2011

Christie Vilsack: Grassley's Unexpected Challenger?

Christie Vilsack, the wife of former Iowa Governor Tom Vilsack, sounds as if she may be the "mystery candidate" the chairman of the Iowa Democratic Party said was poised to run for the U.S. Senate.

Republican Chuck Grassley will seek a sixth term in the U.S. Senate in 2010 and, so far, two eastern Iowa Democrats who once served in the state legislature have announced they're running. But during an interview with WHO TV, Christie Vilsack -- a lifelong Democrat -- revealed she's considering a run for the senate herself.

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