The normative theory of multilateral democratic integration starts within the context of liberal peoples engaged in the common realization of rights, freedoms, and life chances for their citizens while seeking to preserve self-government and popular sovereignty. The point argued in the paper is that the fair terms of multilateral democratic integration must be determined by an integrated original position of citizen and people representatives choosing basic principles of liberal multilateralism. The proposal to merge the two Rawlsian original positions offers a political solution to the contrast between rival conceptions of grand universalism and national particularism. After a general discussion of the wider problematic and the original position (1), I explain the concept and the reality of multilateral democratic integration (2). In part three, I justify why citizen and people representatives ought to be seen as participants of the original position of multilateral democratic integration. I then assess the rational motives of both types of representatives (4) and determine the veil of ignorance of the integrated original position (5). In section (6), the original position is applied to the test of several normative hypotheses prima facie considered as candidates for basic principles of multilateral democratic integration. These principles are not necessarily new, but they are principles which presumably apply to multilateral democratic integration as a specific political order and system of cooperation.