I’ve already written the prebuttal in WaPo:

It is easy to dismiss as overblown the concern about the outsize role of ultra-rich donors in the American political scene. Exhibit 1: Jeb Bush. Bush’s $100 million in super PAC fundraising was supposed to be part of a shock-and-awe campaign that would scare away competitors and give him a smooth path to the Republican presidential nomination. Well, it hasn’t worked out that way. Bush has been polling toward the bottom in the Republican race despite the war chest, and Donald Trump, who has spent little on his campaign despite his billionaire status, has been on top.

“Hurrah for Citizens United ,” Politico’s Jack Shafer wrote in one representative piece. He asserted that worries about the 2010 Supreme Court ruling have been proved wrong. “Expectations that big money would float the best-financed candidate directly to the White House have yet to materialize this campaign season.”

But this overly simplistic analysis misses the key role of money in contemporary American politics. In spite of the rhetoric of some campaign reformers, money doesn’t buy elections. Instead, it increases the odds of electoral victory and of getting one’s way on policies, tax breaks and government contracts. And the presidential race is the place we are least likely to see money’s effects. Looking to Congress and the states, though, we can see that the era of big money unleashed by the Supreme Court is hurtling us toward a plutocracy in which the people with the greatest economic power can wield great political power through campaign donations and lobbying….

The legacy of Citizens United is not about the ultra-wealthy simply buying elections or about politicians on the take. Money can’t buy you Jeb. Instead, we face a subtler but equally pernicious rise of a plutocratic class capturing private benefits for personal gain.