That tidbit and much more in Open Secrets tally of Election 2016:
That’s why we also looked at the top 1 percent of 1 percent of donors, a group of less than 200 people who spent almost $1 billion combined in the 2016 cycle. The group’s political contributions more than doubled from 2012 to 2016, from about $390 million to nearly $948 million. And although the group’s size grew by about 33.4 percent, which would naturally raise giving totals, the contribution increase amounted to an even greater 143 percent.
The uppermost crust
Billionaire donors like casino mogul Sheldon Adelson and his wife, Miriam, consistently pile millions of dollars onto federal elections. The pair contributed a combined $82.5 million over the course of the 2016 cycle. But they were eclipsed by a single individual: Tom Steyer, a hedge fund manager and environmentalist, who led all donors by pumping more than $90 million into the election. Despite their political differences, Steyer, a liberal, and the Adelsons, staunch conservatives, are on the same page when it comes to spending millions of dollars on their causes.