Will 2016 spell the end of TV as king of political advertising?

As the presidential primary season begins, so does a previously unthinkable notion: This year could spell the end of television as the dominant media for political campaigns. The paradox of 2016, as Rick Hampson of USA TODAY notes, is this: Despite unparalleled political spending on TV ads, there is equally unprecedented doubt over whether they have much impact. The concerns revolve around the surprising campaign of Donald Trump, who remains the Republican front-runner despite spending little money on advertising. In…