Original sentence: The Mark Levin Show is a conservative talk radio show hosted by Mark Levin.The program is broadcast nationwide on Westwood One and reaches an estimated seven million weekly listeners, according to an estimate from Talkers Magazine
Edited sentence: The Mark Levin Show is a conservative talk radio show hosted by Mark Levin, who is often regarded as one of the brightest national on-air commentators  The program is broadcast nationwide on Westwood One and reaches an estimated seven million weekly listeners, according to an estimate from Talkers Magazine