Well, except the Trump followers never thought it could happen to their guy. They were so sure Trump had it locked up, hence the apoplectic responses from the Trumpsters. It's amusing how they claim this national poll and the multitude of other Iowa polls showing Carson taking the lead are all bogus, yet when the poll shows Trump leading these same people accept it as truth.
The polls mean very little either way. Whoever wins, they will need to win over the other guy’s supporters. Mock with caution.