DES MOINES, Iowa — Democrat Fred Hubbell says he’s raised more than $1 million for his gubernatorial campaign.

The Iowa businessman announced in a Monday press release that the haul came from individual donors in the state. He did not disclose specific details about the donors or how many contributed, though he said none of the money came from special interest groups or self-financing.

A campaign spokesman says the money has been collected since early May and more information about the donations will be released when campaign disclosure filings are due in January.

Hubbell is a well-known philanthropist and political campaign donor whose family has been involved in multiple business ventures in the state. He announced this month he was formally seeking the Democratic nomination for governor. Several other Democrats have announced plans to run.