How Georgia's Senate races became the most expensive ever

The 2020 Georgia Senate races are the most expensive in US history.
More than $480 million has been spent on ad placement in the runoff elections, and that's just since Election Day.
The cost of running a political campaign in the US has been growing steadily over the past decade due to the landmark 2010 Supreme Court decision known as Citizens United.
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Just since Election Day, Georgia Senate candidates and outside groups have spent $480 millio