Eventually the party diminished after Manglapus lost the 1965 election to Marcos, and so Manglapus and Manahan went on their separate ways, putting the party in the backburner.
Eventually the party diminished after Manglapus lost the 1965 election to Marcos, even after reorganizing the party. Soon, Manglapus and Manahan went on their separate ways, with Manglapus forming the CSM in 1968, thus putting the progressives in the backburner.