Jerry Springer has initially signed a one-month deal with ITV
His Springer on the Radio, which began in January on WCKY-AM in Cincinnati, has expanded to other stations in Cleveland, Miami and San Antonio.
The new deal, with the Air America Radio network, will see his live show broadcast on 45 more radio stations from 1 April.
Air America also features comedian and liberal commentator Al Franken.
Springer said: "I said when I started the show that I am committed to making this radio programme work.
"We need to hear progressive voices as well as conservative voices in our conversation today."
Television star  has signed a contract to join the year-old political network  starting April 1. He says the new deal will not affect his popular television program, which will continue to be produced.  

After initially being carried by only 45 stations nationwide, the host of the long-running syndicated program, '''' will eventually have his radio show heard on all 51 Air America affiliates. The show also is planned to be broadcast by the Sirius and XM satellite radio services. 

Springer said he is committed to making his radio show a success. "Progressive, populist voices need to be a part of our nation's dialogue," Springer said in a press release. "I hope I can make a contribution." 

Although best-known for his low-budget, tongue-in-cheek talk show, Springer does have a political pedigree. He was a Democrat mayor of Cincinnati in 1977 and made a failed bid for governor of Ohio in 1982.