Washington (CNN) A rash of negative stories about Hillary Clinton's ethics have failed to hurt her standing with Iowa Democrats, according to a Quinnipiac University poll released Thursday.

Sixty percent of likely Democratic Caucus participants said they support Clinton, a number similar to the 61% who supported her in February. Like Democrats nationally, 76% of Iowa Democrats polled said Clinton is honest and trustworthy and only 7% said they would "definitely not support" her.

"One thing is obvious about Iowa Democratic Caucus participants: They are loyal as the day is long, at least when it comes to Hillary Clinton," said Peter A. Brown, assistant director of the Quinnipiac University Poll. "The former secretary of state has taken a major pounding in the news media and from her political opponents over her e-mail and family foundation. So far these criticisms have had absolutely no effect on her standing among Iowa Democrats."

Since announcing last month, Clinton and her nascent campaign have been dealing with scrutiny over her exclusive use of personal email at State, her family foundation's questionable fundraising practices and a congressional investigation into the 2012 terrorist attack in Benghazi, Libya.

Read More