And the lethal amateurishness of these loyal Bushies on the make horrifies the corporate elite almost as much as it horrifies ordinary Americans.

Last but not least, even corporations are relieved to see the end of what amounted to a protection racket.

In a classic 2003 article in The Washington Monthly, Nicholas Confessore (now at The New York Times) described the efforts of people like former Senator Rick Santorum to turn K Street into an appendage of the Republican Party — not the other way around. “The corporate lobbyists who once ran the show, loyal only to the parochial interests of their employer,” wrote Mr. Confessore, “are being replaced by party activists who are loyal first and foremost to the G.O.P.”

But corporations weren’t happy. According to The Politico, “many C.E.O.’s” used the term “extortion” to describe “the annual shakedowns by committee chairmen with jurisdiction over their industries.” And now that Mr. Santorum is out of office, heading the America’s Enemies program at a right-wing think tank, the faint sound you hear from K Street is that of lobbyists singing: “Ding, dong, the witch is dead.”

All of this greatly increases the odds that the Republicans, far from establishing a permanent majority, will be out of power for quite a while. But it also raises the question of what Democratic rule will really mean.

Right now all the leading contenders for the Democratic nomination are running on strongly progressive platforms — especially on health care. But there remain real concerns about what they would actually do in office.

Here’s an example of the sort of thing that makes you wonder: yesterday ABC News reported on its Web site that the Clinton campaign is holding a “Rural Americans for Hillary” lunch and campaign briefing — at the offices of the Troutman Sanders Public Affairs Group, which lobbies for the agribusiness and biotech giant Monsanto. You don’t have to be a Naderite to feel uncomfortable about the implied closeness.

I’d put it this way: many progressives, myself included, hope that the next president will be another F.D.R. But we worry that he or she will turn out to be another Grover Cleveland instead — better-intentioned and much more competent than the current occupant of the White House, but too dependent on lobbyists’ money to seriously confront the excesses of our new Gilded Age.