For the first time, these groups topped the $100 million spending mark in just one week, so reports Sunlight Foundation, a watchdog group.
And it isn't even all presidential; last week, House races attracted $34.7 million, Senate races attracted $34.3 million, while $33.3 million was spent on the Obama v. Romney showdown.
Pro-Republican outside groups have consistently spent more than pro-Democratic ones since Sept. 7, which is when all independent political expenditures had to be reported. This week, pro-GOP groups spent nearly $58 million, with pro-Dem groups spending nearly $50.5 million.
See more breakdowns (and some fancy charts) over at Sunlight.
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