[5] The "political associations" were the result of development of the Organic Law of the State of 1966, and sought to promote a very limited and controlled "pluralism" within Francoist Spain.

The Spanish People's Union was led by the, then Minister of Education, Cruz Martínez Esteruelas and the general secretary of the Movimiento Nacional Adolfo Suárez.

The Spanish People's Union wanted to group the ruling politicians of Francoism, very attached to the bureaucratic apparatus of the Movement.

On July 11, 1975 Adolfo Suarez become the president of the UDPE,[6] until the 12 of December, when he left to be the secretary general of the Movimiento Nacional again.

[7] UDPE joined the People's Alliance (AP) with other political forces on October 9, 1976.