It may be a reference to the essay "What I Believe" by E.M. Forster. From WikiQuote: "Two Cheers for Democracy: one because it admits variety and two because

It may be a reference to the essay "What I Believe" by E.M. Forster. From WikiQuote: "Two Cheers for Democracy: one because it admits variety and two because it permits criticism. Two cheers are quite enough: there is no occasion to give three." The phrase provided the title Two Cheers for Democracy to the book that later collected it and other Forster essays.