By Kevin Bogardus and Megan R. Wilson - 08/20/13 08:55 AM EDT
The 2012 vice presidential contender holds his own in the "millionaires club" of the Senate.
Previously, the senator worked at Portman Equipment Company, a business started by his father. Before entering politics, Portman started his own private law practice and represented the company.
Portman's net worth increased about $600,000 last year, in part due to a decline in his liabilities. Portman had $750,000 in liabilities in 2011, but only $350,000 worth in 2012.
— Meredith Bentsen