Member of the People's Party Parliamentary Group in the Parliament of Catalonia between 1995 and 1996, he later worked in the staff of Mariano Rajoy during the later's spell as minister.

[5] He resigned to his seat in 1996, to become chief of staff of the Minister of Public Administrations, chief of Staff of the Minister of Education and Culture in 1999, and director general of Relation with the Cortes in 2000, always under the aegis of Mariano Rajoy.

In 2008, Marhuenda, until then working as delegate of La Razón in Barcelona, was chosen by Mauricio Casals to become the new editor of the newspaper in Madrid.

[7] A member of the Catholic Association of Propagandists, Marhuenda obtained a second PhD in 2015 reading a thesis dealing with press freedom in Spain at the CEU San Pablo University.

[8] In April 2017, Marhuenda and Casals were criminally indicted accused of participating in a extorsion scheme against the President of the Community of Madrid Cristina Cifuentes, which would have the purpose of hindering the investigations on the corruption case around the Canal de Isabel II water company.