A relative handful of mega-donors capable of writing seven-figure checks, thanks to the 2010 Supreme Court ruling in Citizens United that opened the door for unlimited campaign contributions, have fuelled this fall's dizzying rise in outside political spending, which jumped from $14 million the week ending Sept. 1 to $110 million the week ending Oct. 20, according to Sunlight's Follow the Unlimited Money tracker.
In September, 25 individuals or organizations wrote checks of $1 million or more to super PACs, according to Sunlight's analysis of the last full month of campaign expenditure reports that we will see ...
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