Minimum net worth: $23.78 million
Much of Berg's growing fortune is in real estate.
The first-term North Dakotan owns dozens of apartment units and commercial properties that contributed to a minimum net worth of $23.78 million in 2011.
Berg's stake in multiple buildings held by Old Abe Capital LLP were worth more than $8.9 million, according to his most recent filing.
Berg also reported as assets multiple outstanding loans that he has made to individuals, businesses and his campaign.
Published with permission from CQ Roll Call.