(DES MOINES, Iowa) -- One of the most intriguing political races of 2012 may be shaping up in Iowa's 4th congressional district.
That's where Republican Steve King, a darling of the Tea Party, could face a dogfight with the wife of Agriculture Secretary Tom Vilsack.
Before coming to Washington, Vilsack was Iowa's governor and Christie Vilsack was the first lady of the state who championed education, having once been a teacher.
Mrs. Vilsack is now apparently serious about running for Congress. She announced the formation of an exploratory committee Wednesday to test interest in a possible candidacy.
Her mission to unseat King will be an uphill battle -- he won re-election last November with 64 percent of the vote and has a lot of support from conservatives who want to deport illegal immigrants and repeal the healthcare law.
Still, political observers in Iowa think that Christie Vilsack might be a formidable opponent, given her enduring popularity in the state. They also predict it could turn out to be one of the most expensive House races in the nation.
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