RPT-Wall St Week Ahead-U.S. broadcasters in line for political ad windfall

Local TV companies such as Sinclair Broadcast Group and Gray Television are set for a significant political advertising boost this year as candidates and special interest groups are spending heavily to woo voters in mid-term elections. Demand for commercial airtime is particularly strong ahead of elections for one third of the U.S. Senate seats, and all 435 House of Representatives s