Every election cycle, there is a lot of talk about the vast sums of money being raised by candidates in support of their campaigns. But often times it's the money being spent to OPPOSE candidates that can have the greatest effect on our democracy. We analyzed campaign spending data to determine which presidential candidates have had the most money spent against them by outside groups and the results were astonishing.

By the numbers, President Barack Obama has generated the most ire from independent expenditures - which yielded a record $404 million in attack ads during the 2008 and 2012 campaigns. Finishing a distant second and third place were Governor Mitt Romney and President George W. Bush, who saw $97 million and $88 million spent against them respectively.

But what goes around comes around - outside groups organized to support Mitt Romney's 2012 campaign contributed heavily to the over $30 million spent to oppose both House Speaker Newt Gingrich and Senator Rick Santorum in the 2012 Republican presidential primaries.

And as the role of superPACs continues to expand into the 2016 elections, remember that we still spend relatively little on politics compared to other sectors of the economy. In fact, Americans spend just as much money treating erectile dysfunction every year as they do on political campaigns.

That's why we created Crowdpac - to put politics back in the hands of the people instead of the big donors. We've made it easy to find and support the candidates who champion the issues you care about - check out the crop of current and potential 2016 candidates today to support your choice for President even before they decide to run!

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