The history of the Hungarian Party in the first Slovak Republic has not been studied up to now. The leading figure in Hungarian politics in Slovakia was János Esterházy, who had to manoeuvre between the expectations of Bratislava, Budapest and Berlin. His rightist, Christian – conservative politics, which contained many contradictions and were not entirely compatible with the political orientation of Slovakia at the time, also had critics within his own party. The present study is concerned with internal disputes within the Hungarian Party and with attempts to reconstruct the party according to national socialist principles. The text also devotes detailed attention to the attempts to remove J. Esterházy from the leadership of the party and the views of Budapest and Berlin on this process.