Ad campaign spending in 10 of the most closely contested US mid - term election battles could have exceeded $ 1bn , according to the Ad Age Datacenter ’s analysis of figures from Kantar Media / CMAG which said $ 967.5 m had been spent on the eve of the poll with more spending possible . High spending was shared between Democrats and Republicans , said Ad Age , depending on the size of individual areas and politicians . Kantar Media / CMAG ’s statistics also said the number of mid - term election ads reached 4 million between January and March 2018 compared to 3.2 million in the first six months of 2018 before the presidential election .
Ad campaign spending in 10 of the most closely contested US mid-term election battles could have exceeded $1bn, according to the Ad Age Datacenter’s analysis of figures from Kantar Media/CMAG which said $967.5m had been spent on the eve of the poll with more spending possible. High spending was shared between Democrats and Republicans, said Ad Age, depending on the importance of individual areas and politicians. Kantar Media/CMAG’s statistics also showed the number of mid-term election ads reached 4.5 million between January and October 2018 compared to 3.2 million in the first 10 months of 2016 before the presidential election.