President-Elect Joe Biden had a huge political spending advantage in key battleground states, helping him beat President Trump in the presidential election. In four of five key states, Advertising Analytics says, dominant Biden advertising resulted in wins for those states' electoral votes.
Those states include Pennsylvania, Michigan, Wisconsin, and Arizona.
Pennsylvania was a major target for Biden, who spent $134 million in that state versus President Trump's $59 million (a $74.8 million ad-spending advantage).
Spending figures include candidate and political action committee and group spending from September 1 though November 3.
Only in Florida did Biden's major spending not result in a win -- with Biden spending $179 million to Trump's $90 million. The $88.7 million was Biden's largest state advantage. According to Real Clear Politics, the average of polling the day before the election shows Biden with a tiny 0.9% lead in that state.
The day before the election saw Biden polling up in four of those big-spending states -- Pennsylvania (1.2%), Michigan (4.2%), Wisconsin (6.7%), and Arizona (0.9%).
Trump had ad-spending advantages in Iowa ($7 million), Georgia ($11.6 million), and North Carolina ($17.7 million) -- states where he either won or has been ahead.