Trump Sorry for Iowa Insult Although he blames an intern By John Johnson, Newser Staff Posted Oct 23, 2015 7:04 AM CDT 88 comments Comments Donald Trump speaks during a campaign stop at the Burlington Memorial Auditorium Oct. 21 in Burlington, Iowa. (AP Photo/Charlie Neibergall) (Newser) – Donald Trump did not have a good day in regard to Iowa Thursday. First, a new Quinnipiac poll found that Ben Carson had overtaken him in the state for the first time, and by a decent margin to boot—28% to 20%. Hours later, Trump's Twitter account retweeted this from a supporter (with hashtags removed): "BenCarson is now leading in the polls in Iowa. Too much Monsanto in the corn creates issues in the brain?" After that drew the attention of a Des Moines Register political reporter, Trump deleted the offending tweet and blamed an intern. "The young intern who accidentally did a Retweet apologizes," he wrote. Friday's not off to a better start for Trump: A Des Moines Register/Bloomberg poll gives Carson an even bigger lead in Iowa: 28% to 19%. "His standing has improved in every way pollsters traditionally measure," says the pollster of Carson. "This might be a wake-up for Donald Trump."