Illinois' two U.S. senators -- including the one running for president -- have weighed in on the debate over rolling out Arbitron's Portable People Meters (PPM).Sen. Barack Obama and Sen. Richard Durbin co-signed a letter to Arbitron asking it delay rolling out PPMs in the Chicago market. They are asking the research company hold off deploying PPMs in Chicagoland until they receive the blessing of the Media Ratings Council (MRC).
In their letter, the presidential candidate and the senior senator from Illinois say:
"MRC accreditation is the only third-party tool we have to judge whether or not the system is being properly implemented. And the implications of poor implementation of a new PPM system for the public interest are too serious to ignore."













