This article analyses and explains the rapid electoral success of an emergent populist radical right party in Romania—the Alliance for the Union of Romanians (AUR). AUR’s definition of ‘a transnational people’ relates to a multi-layered community—native Romanians within Romania, co-ethnic communities in neighbouring countries, and Romanians living and working abroad—that create, together, a Romanianness in need of representation, and preservation. By focusing on AUR’s definition of ‘the people’ and on (trans)national mobilization, we unwrap a new dimension of populism which refers to broader fields of connectedness across borders in which bottom-up and top-down dynamics co-exist, acting as rhetorical and operational openings for the party’s development and success in the homeland arena.