There was a massive amount of anti-Trump advertising in Wisconsin. In addition to $1.4 million spent by Cruz, $2 million was spent by anti-Trump Super PACs. And there was also probably a big wave of last-minute ads not accounted for in yesterday’s news.

Where is the anti-Trump money coming from?

The “Club for Growth” is a super PAC with the goal of keeping Republican Party policies friendly to huge corporate interests and the super-rich. Of course they have the usual claims about why having low taxes on the richest Americans trickles down to Joe Schmoe, in reality they don’t care about Joe Schmoe. Why are they wasting their money on trying to take down Trump? Besides the ickiness of Trump’s PROLE demeanor, they are probably afraid that he might actually get elected, implement his anti-immigration policies, and significantly increase labor costs (which would be a big boon to Joe Schmoe but hurt the super-rich).

And then there the Our Principles PAC, which is run by a lot of Republican insiders who previously worked for Jeb Bush, Romney, etc. A big source of funding is Marlene Ricketts, wife of billionaire J. Joe Ricketts who became a billionaire by owning discount brokerages which eventually became Ameritrade and then T.D. Ameritrade.

The other big-player in Our Principles PAC is billionaire Meg Whitman, who was the CEO of eBay and then became CEO of Hewlett-Packard.

So we see that Our Princples PAC is also backed by super-rich Big Finance and Silicon Valley types. In both cases, they probably want Hillary to win to prevent Trump from implementing his anti-immigrant policies. Plus there are some Republican types who are either duped into thinking they are “helping” the party, or they are just so familiar with the Republican Party that bends over to huge corporations and the super-rich that they can’t imagine any other way.