According to AdImpact data, Democrats have outspent Republicans in Michigan by a total of more than $50 million, $184 million to $130 million, during the three months since Harris became the nominee, and including bookings through Election Day.
A breakdown of each side’s reservations within the state – which has seen the second most presidential advertising overall, behind only Pennsylvania – shows Democrats concentrating their resources on urban areas that represent strongholds of votes, and Republicans spreading their money across the state, aiming to reach their voters in more rural areas.
According to data from the ad tracking firm AdImpact, the Detroit media market dominates the state, accounting for about 54% of all the presidential ad spending in Michigan media markets since July 22.
Democrats have outspent Republicans in the Detroit market by about $6.2 million, where each side has spent more than $50 million, reflecting Harris and her allies’ overall advertising lead in the state. They’ve also led Republicans by about $2.4 million in the Lansing media market, abutting Detroit.
In a pair of media markets covering key counties in Grand Rapids and Kalamazoo, Democrats have also outspent Republicans, though by smaller margins, about $400,000 to $600,00. And Democrats have also outspent Republicans by about $854,000 in a market covering another key portion of the state, Traverse County.
Republicans have outspent Democrats significantly on satellite TV in Michigan by about $1.9 million, a pattern reflected across other battleground states, indicating a strategic preference among pro-Trump advertisers; Republicans have also invested an unmatched $120,000 in regional sports networks, and outspent Democrats in the Marquette market by about $280,000.
