Six major “super PACs” backing former and current Republican presidential candidates were almost entirely funded by massive contributions from individuals and corporations of at least $100,000, according to a TPM analysis of campaign finance data.

Take Restore Our Future, the super PAC supporting but totally not coordinating with Mitt Romney: 58 donations of over $100,000 given to the super PAC made up 82.59 percent of its intake during the second half of 2011.

It shouldn’t come as much of a shock that big donations as opposed to a large number of small or medium-sized donations are really what matter most to independent expenditure-only political action committees. But the numbers really demonstrate just how little moderate donations — the kind typically touted by political campaigns proud of their grassroots support — are playing a part in the new age of unlimited campaign cash.