Semjén has been the leader of the Christian Democratic People's Party (KDNP) since 2003, which formed a coalition and alliance with Fidesz.

In the second half of the 90s, he had his theology laureatus degree converted to a doctorate in religious studies, and was given an honorary assistant professorship at the university.

In 2014, he obtained an MA degree in wildlife management from the Faculty of Forestry Engineering of the University of West Hungary.

[1] According to an article on 18 November 2012 by Heti Világgazdaság, Semjén committed acts of academic misconduct, as he allegedly plagiarised around 40% of his 1991 theological doctoral thesis, parts of which he also resubmitted as his sociology diploma dissertation in 1992.

[3] Pázmány Péter Catholic University did not conduct an investigation in the case, and announced that they consider the question closed, thus Semjén still has his PhD degree from that institution.

According to his program, the KDNP will remain an independent party in the Fidesz-led alliance that fully accepts the social doctrines of the Christian churches.

[7] On April 8, 2018, the Fidesz-Christian Democratic People's Party - for the third time - won the parliamentary elections with a two-thirds majority, gaining another mandate from second place on the national list.

The event lasted twenty days, the central location was visited by a total of 616 thousand people.

The rural locations, where the programs were held until the end of 2021, were visited by around 1 million 420 thousand people until October 15.

[16] In February 2023 Matteo Bruni, Director of the Press Office of the Holy See, announced that Pope Francis, accepting an invitation from civic and church dignitaries, would travel to Hungary for an apostolic journey from 28 to 30 April 2023.