Paul Blumenthal for HuffPo:

Overall, super PACs have raised approximately $955 million this year, according to FEC reports, far more than they did at this point in the 2012 campaign. What’s more, the biggest contributors are responsible for a growing percentage of the total flowing into super PACs. Some of the 2016 data runs through August, while other groups’ disclosures go through June.

Super PAC funding in the 2016 election has largely been overshadowed by the success of GOP nominee Trump. The superrich, however, have been paying attention ― and pouring money into super PACs like never before.

An analysis of 2016 super PAC filings shows that the 257 donors giving $500,000 or more have contributed a total $709 million. That makes these big donors responsible for 74 percent of all super PAC money ― an increase of 7 percentage points from just before the 2012 election. The top 20 donors in 2016 have contributed a whopping $300 million, or nearly one-third of all contributions.