This chapter builds on the CDS framework developed in the previous chapter by focussing on political and immigration discourse, thereby establishing the conceptual and analytical foundations for the empirical case studies that follow. It first delineates political discourse within CDS, emphasizing its embeddedness in power relations, ideological formations, and communicative practices. The chapter then turns to immigration as a discursive object, examining how migrants are recurrently constructed through frames of threat, otherness, and exclusion, and how such representations contribute to the normalization of inequality and the legitimation of restrictive policies. Particular attention is devoted to Ruth Wodak’s Discourse-Historical Approach and Teun A. van Dijk’s socio-cognitive approach, which offer complementary tools for analysing the intersections between political discourse, ideology, and migration. The chapter finally situates immigration discourse within contemporary digital media environments, framing it as a privileged lens for understanding the platformed and increasingly populist dynamics of political communication. In doing so, it establishes the theoretical and methodological basis for the analyses developed in the subsequent empirical chapters.