Editing Christian Democratic Appeal (section)

==== Federation ====
[[File:Aantjes tijdens zijn rede, Bestanddeelnr 928-1183.jpg|thumb|ARP leader [[Willem Aantjes]] held a speech during the first CDA convention in 1975 in which he argued for the importance of the evangelical guidelines in the party. The speech became known as his ''sermon on the mount''.{{sfn|Gradus|Harinck|Hoentjen|Van Kessel|2012|p=31}}]]
Nevertheless, based on the memorandum, the Christian Democratic Appeal was officially formed as a pre-federation in 1973,{{sfn|Ten Napel|1992|pp=211-219}} with Steenkamp as its chairperson. It would employ a "growth model", in which they would work out political and organizational details, while keeping the original parties until the last moment.{{sfn|Ten Napel|1992|pp=219-222}} Meanwhile discussions continued on the role of the Bible in the party{{sfn|Zwart|1996|pp=244-247}} and the political course. When the pre-federation was turned into a federation in 1975, some conservative members of the CHU and ARP left to form the [[Reformatory Political Federation]] (RPF).{{sfn|Zwart|1996|p=243}}