Poll: Scott Walker leading, but lead slipping in Iowa

Despite leading the GOP pack in Iowa, Wisconsin Gov. Scott Walker has been losing steam.

Walker, who has plans to join the Republican presidential field on July 13, is polling at 18 percent from likely GOP caucus participants in Iowa, according to a new Quinnipiac University Poll.

Though that puts him ahead of a crowded Republican field, it is a noticeable decrease from the 21 percent he had two months ago. And in February, Walker had 25 percent.

"Those who thought the Republican race in the Iowa caucuses might begin to clarify itself better think again," said Peter Brown, assistant director of the Quinnipiac University Poll. "As even more candidates toss their hats into the ring, the race has gotten even more muddled."

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