In 1964, military – and civilian – forces organized a coup d'etat. The Patrianovists were yet again supporters of the new regime, as they were part of the conspiring forces. In the following years, political liberties were weakened by the new government. Patrianovism was also affected as the movement progressively crumbled. In 1978, Arlindo Veiga dos Santos passed away, after persisting in the political exclusion he found himself in.