A new
American Research Group poll in Iowa shows Sen. Hillary Clinton expanding her lead in the last week.
Clinton now leads with 34%, followed by John Edwards at 20%, and Sen. Barack Obama at 19%.
In the GOP race, Mike Huckabee leads at 23%, trailed by Mitt Romney at 21%, Sen. John McCain at 17%, Rudy Giuliani at 14% and Rep. Ron Paul at 10%.
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