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 . The temptation on Nov. 7 and thereafter is to think, well, at least it's over for now. 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 $ 967.5 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 .