Mumbai, April 19 -- Political parties are expected to spend as much as '300 crore on advertising on television news channels during the ongoing 17th Lok Sabha elections, according to media buyers. Experts believe news channels would get more than 50% share of the overall election advertising expenditure on television, which is expected to touch '500 crore. A GroupM ad forecast report said that Indian advertising spending is expected to grow by 14% to touch '80,678 crore in 2019, the fastest in four years, driven by the cricket World Cup and LS polls. "The viewership of news channels across languages goes up significantly as they cover elections from the ground. There are other general entertainment channels (GECs) that are part of the plan....