After preliminary data was published, Sáenz de Santamaría conceded the election and acknowledged Casado's victory.

Extraordinary congresses had to be called by a two-thirds majority of the Board of Directors at least one-and-a-half month in advance of their celebration, though in cases of "exceptional urgency" this deadline could be reduced to 30 days.

[10] In the first round, all registered party members who had their payment fees up to date were allowed to vote for any of the candidates who had been officially proclaimed by virtue of securing the required number of signatures to run.

The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the candidate's colour.

Polls show data gathered among PP voters/supporters as well as Spanish voters as a whole, but not among party members, who are the ones ultimately entitled to vote in the primary election.