He enrolled in the National Law College and at the same time worked as a clerk in the Bureau of Commerce in 1919 where he rose to the rank of Chief, Commercial Section.

A ranking member of the Nacionalista Party (NP), Primicias entered politics in 1934 when he was elected to the Philippine House of Representatives from the fourth district of Pangasinan.

Upon appeal to the Philippine Supreme Court all twelve legislators were reinstated, but by that time their temporary ejection had served its purpose and the Bell Trade Act had already been ratified.

""To the Majority Floor Leader, the "Parliamentarian par excellence" goes the plaudit not only of the Presiding Officer and of all the Members of the Senate but all those who have watched the deliberations of this chamber.

""The Free Press believes that Floor leader Cipriano P. Primicias rates special mention as the Fiscalizer of The Year.

There is little doubt that he towers head and shoulders above the opposition crowd in the fight to preserve the independence of Congress and the two-party system.