Coming off this weekend’s Americans For Prosperity conference, we know more than ever that the Koch brothers’ machinations are all about power — it all comes down to the control and influence that enables them to profit at the expense of ordinary Americans. Here’s how The Associated Press put it:

The head of the Koch brothers’ flagship political organization says a Republican winning the presidency is becoming a higher priority for more of its members, suggesting a rift between pragmatists and ideologues.

“I do think there is a sense of urgency about the future […] that you owe it to your principles to win for those principles,” AFP President Tim Phillips said, according to The Associated Press.

And he’s right: Charles and David, and their donor network, will back whomever they think is the most electable — not who most aligns with their “principles.”

Why? Because they have no real principles. Their only motivation is power — power with which they can execute their self-interested, profit-maximizing policy agenda.

And once they help a candidate get elected, they have all the leverage they need to execute that agenda.

Once they start throwing their money around, they have the leverage to manipulate anyone into promoting their profit-driven policy agenda.

Well, almost anyone.

The only exception to that rule? Frontrunner Donald J. Trump — the man who can’t be bought — whose growing lead over the rest of the GOP field is keeping the Kochs up at night.

Read more: Associated Press: For Koch Group, Winning Is Rising as Priority Over Purity.