CNN: New Monmouth Poll Shows Ben Carson Tied with Trump in Iowa

Ben Carson ties Donald Trump in new Iowa poll (CNN)

For the first time in more than a month, mogul Donald Trump is not leading the field in one of the first four nominating states in the Republican primary, according to a new poll.

Neurosurgeon Ben Carson has surged up in the pack to tie Trump in Iowa, Monmouth University found in a poll out Monday.

Trump and Carson are tied at 23%, according to the survey, making it the first time since July 26 that a poll in the first four states to select a Republican nominee did not find Trump substantially ahead of all other candidates.