Campaign spending on radio and television advertising has crossed the half-billion-dollar mark. With the $37 million being spent this week on political advertising — including the campaigns and the Super PACs that support them — the grand total for this campaign is now more than $512 million, about the amount spent on advertising in the entire 2008 general election, according to an NBC News/Smart Media Group Delta analysis.
Almost half of that money is coming from outside groups, like Super PACs — and the vast majority of the outside money is going to support presumptive Republican nominee Mitt Romney. Outside groups have spent a whopping $238 million on the 2012 general-election campaign. And about $9 out of every $10 – in total, $205 million – spent by an outside group is going to support Romney or hammer President Obama.