It strongly differentiates itself from the National Democratic Party (NPD) and German People's Union (DVU), who tend more towards national socialism. Its closest ideological ally among the right-wing parties is The Republicans.[citation needed] Historically, and as its name implies, it is modelled after the CSU in Bavaria, the more rightist of the two Union "sister parties". However it was not possible for the DSU to join the CSU, as the CDU and CSU do not compete in the same states.