Feb 24 2021 News Political Content on Social Media 2021 There’s no doubt that CTV and OTT were the big trends for political advertising in 2020. “We saw a ton of investment in the CTV space, both programmatically and through reserved buys with premium CTV providers,” Briscoe said of Centro’s demand-side platform (DSP). Between January 1 and October 5, 2020, for example, CTV accounted for 25% of the programmatic political ad dollars that went through Centro’s system. In 2018, just 5% of Centro’s political programmatic buying went to CTV. Read more in eMarketer.