How did Justice Stevens view the risk of corporate domination of political debate?

In his dissenting opinion in Citizens United v. Federal Election Commission, Justice John Paul Stevens expressed deep concern that corporate domination of political speech during elections would "impoverish rather than enrich the marketplace of ideas."1

He argued that the majority’s decision ignored the reality of how corporate influence functions in the electoral process. Stevens contended that the court’s approach would "cripple the ability of ordinary citizens, Congress, and the States to adopt even limited measures to protect against corporate domination of the electoral process." Furthermore, he criticized the majority for dismissing the state’s "antidistortion interest," noting that their reliance on a narrow definition of corruption—limited to quid pro quo exchanges—was "simplistic and naive." Ultimately, Stevens warned that the ruling threatened to undermine the integrity of democratic institutions and failed to advance the cause of self-government.1