National Union (Portugal)
The National Union (Portuguese: União Nacional, UN) was the sole legal party of the Estado Novo regime in Portugal, founded in July 1930 and dominated by António de Oliveira Salazar during most of its existence. Unlike most single-party regimes, the National Union was more of a political arm of the government than a body with actual power over it.
Source: Wikipedia — National Union (Portugal) (CC BY-SA 4.0)