  We show that the recently discovered short period supersoft source in M31 is
probably a progenitor of a magnetic CV. The white dwarf spins asynchronously
because of the current high accretion rate. However its fieldstrength is
typical of an AM Herculis system, which is what it will ultimately become. We
discuss the relevance of this system to CV evolution, and its relation to some
particular CVs with special characteristics.
