DES MOINES, Iowa (AP) -- It was a day Iowa Republicans had long dreamed of when their Democratic nemesis, Tom Harkin, announced he was retiring from the Senate. But that day was in January, and as the Midwest winter now gives way to spring, Republicans here find themselves in a surprising predicament - still trying to come up with someone to run for the job, and struggling to avoid becoming another example of the party's disarray after its presidential defeat.
Ever since Harkin, who had held the office since Ronald Reagan was president, provided an opening for the GOP, the party has bounced between two options for the Senate seat:
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