Poll: Trump and Cruz are neck-and-neck in Iowa

Donald Trump and Ted Cruz are running neck-and-neck in Iowa, according to a new Public Policy Polling survey of the Hawkeye State released hours before the next GOP presidential debate.

PPP finds Trump polling first with the support of 28 percent of respondents, followed by Cruz at 25 percent, Marco Rubio at 14 percent, Ben Carson at 10 percent and Jeb Bush at 7 percent. No other candidate clears a 3 percent polling threshold.

Since PPP's last survey of the race, Cruz has the most momentum, but Trump, Rubio and Bush are all on the rise, too. Carson has lost the most ground.

"Ted Cruz's momentum in Iowa is getting all the attention, but Donald Trump is on the upswing there as well," said Dean Debnam, Public Policy Polling president, in a statement. "Donald Trump's supporters agree with every extremist view he's put forth in this campaign. So it's not a surprise that the latest controversy doesn't seem to be hurting him at all."

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