The CSP was unable to maintain its seat. In the 1925 elections the party campaigned as  the Protestant People's Party (Dutch: Protestantse Volkspartij, PVP). In 1926 the CSP founded the Christian Democratic Union with former members of the Christian Democratic Party and the League of Christian Socialists.
The Christian Social Party (CSP) lost its parliamentary seat in 1925.  In 1925, they rebranded as the Protestant People's Party (PVP). In 1926, the CSP formed a new political party called the Christian Democratic Union with former members of the Christian Democratic Party and the League of Christian Socialists.