U.S. TV broadcaster Nexstar has achieved a substantial turnaround in revenues and EBITDA, aided by an upturn in core ad demand and strong political ad spending in the first half of 2010. We are raising our corporate credit rating on the company to 'B' from 'B-'. The stable outlook reflects our expectation that Nexstar will be able to reduce leverage further in 2010, with only a modest increase in 2011, a nonelection year. NEW YORK (Standard&Poor's) Aug. 26, 2010--Standard&Poor's Ratings Services said today it raised its corporate credit rating on Irving, Texas-based TV broadcaster Nexstar Broadcasting Group Inc. to 'B' from 'B-'. The rating outlook is stable. We also raised the issue-level rating on the $175