Cite as: 558 U. S. ____ (2010) 57 Opinion of STEVENS, J. tal interest in preventing corruption or the appearance of corruption” is one that is “limited to quid pro quo corrup­ tion.” Ante, at 43. This is the same “crabbed view of corruption” that was espoused by JUSTICE KENNEDY in McConnell and squarely rejected by the Court in that case. 540 U. S., at 152. While it is true that we have not always spoken about corruption in a clear or consistent voice, the approach taken by the majority cannot be right, in my judgment. It disregards our constitutional history and the fundamental demands of a democratic society. On numerous occasions we have recognized Congress’ legitimate interest in preventing the money that is spent on elections from exerting an “ ‘undue influence on an officeholder’s judgment’ ” and from creating “ ‘the appear­ ance of such influence,’ ” beyond the sphere of quid pro quo relationships. Id., at 150; see also, e.g., id., at 143–144, 152–154; Colorado II, 533 U. S., at 441; Shrink Missouri, 528 U. S., at 389. Corruption can take many forms. Brib­ ery may be the paradigm case. But the difference between selling a vote and selling access is a matter of degree, not kind. And selling access is not qualitatively different from giving special preference to those who spent money on one’s behalf. Corruption operates along a spectrum, and the majority’s apparent belief that quid pro quo arrange­ ments can be neatly demarcated from other improper influences does not accord with the theory or reality of politics. It certainly does not accord with the record Con­ gress developed in passing BCRA, a record that stands as a remarkable testament to the energy and ingenuity with which corporations, unions, lobbyists, and politicians may go about scratching each other’s backs—and which amply supported Congress’ determination to target a limited set of especially destructive practices. The District Court that adjudicated the initial challenge to BCRA pored over this record. In a careful analysis, Judge Kollar-Kotelly made numerous findings about the

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