He became a member of the Colorado Party in his early twenties. The party, then in the opposition, split in 1927, facing a proposal of the Liberal government, headed by president Eligio Ayala. Ayala wanted the Colorados to participate in the drafting of a new electoral law. It was his intention to make sure that both parties should participate in the upcoming election for congress. This caused a split in the Colorado Party amongst the "eleccionistas" (electionists), who accepted the offer, and the "abstencionistas" (abstentionists), who wanted a stronger and radical opposition against the government. Molas joined to the last group and became a close aide to their leader, former president Pedro P. Peña.