By the next presidential election in 2020, broadcast is forecast to only hit $5 billion. In that year, Borrell estimates digital platforms will pull in around $3.5 billion.Borrell says broadcast “will have shed almost 14 share points, while spending is forecast to decrease by 19%. Digital is forecast to absorb that share point loss and more, gaining 16.5 share points during the coming cycle. By 2020, digital political ad spending will have risen to within 30% of broadcast TV levels.”
Source: Digital Forecast To Cut Into TV’s Political Ad Bonanza 08/19/2015