Kirchnerism (Spanish: Kirchnerismo [kiɾʃneˈɾismo]) is an Argentine centre-left to left-wing political movement based on ideals formed by the supporters of spouses Néstor Kirchner and Cristina Fernández de Kirchner, who consecutively served as Presidents of Argentina. Although considered a branch of Peronism, it is opposed by some factions of Peronists and generally considered to fall into the category of left-wing populism. It is considered a representative of the socialism of the 21st century, although similarly to Peronism and in contrast to other left-wing ideologies, it is highly nationalist and populist rather than class-based.
Although originally a section in the Justicialist Party, Kirchnerism later received support from other smaller Argentine political parties (like the Communist Party or the Humanist Party) and from factions of some traditional parties (like the Radical Civic Union and the Socialist Party). In parties which are divided along Kirchnerist and anti-Kirchnerist lines, the members of the Kirchnerist faction are often distinguished with the letter K (for instance "peronistas K", "justicialistas K", "radicales K", or "socialistas K") while the anti-Kirchnerist factions, those opposing Kirchnerism, are similarly labelled with the expression "anti-K".
