Political ads and Super Bowl boost CBS in first quarter

(Reuters) - CBS Corp, the owner of the most-watched U.S. TV network, reported a 10 percent rise in quarterly revenue, beating Wall Street estimates, as the U.S. presidential campaign and Super Bowl broadcast boosted spending on advertising. The New York-based company, whose earnings also handily beat expectations, said on Tuesday that advertising revenue jumped 31.3 percent in the first quarter ended March 31. "Advertising is poised for even more growth in the back half of the year as political