So Help Me Todd and CSI: Vegas are the least watched CBS drama series this spring in both linear and multi-platform ratings.

The dominant ratings provider hopes to fend off competitors by pivoting to a bundle that combines its consumer panels with ...

TelevisaUnivision and Nielsen are arguing over the use of a single southeastern household that appears to be causing big ...

The Media Rating Council approves the company's use of traditional panel sampling alongside input from millions more homes.