Scott Rasmussen, the founder of polling firm Rasmussen Reports left the organization in July, according to a company release.
Chief Operating Officer Mike Boniello will helm the firm "until a replacement for Mr. Rasmussen is named," the company said.
The release gave no indication of the reason for the departure.
"The Company emphasized that Mr. Rasmussen's legacy remains intact," the release said. "His polling methodologies and protocols, widely acknowledged as among the most accurate and reliable in the industry, continue to guide and inform the company’s public opinion survey techniques. In addition, the editorial culture of excellence that he built is still very much in place."
Generally speaking, Rasmussen is controversial within the polling community.