Merits of one-party system:
(1) It helps in the establishment of stable administration which further helps in the progress of the country. The progress of the Soviet Union is a glaring example in this regard.
(2) In this system, formation and execution of long-term planning is possible.
(3) The country achieves remarkable economic progress as the Government ends the conflicts among all the classes and it devotes its entire energy, towards the increase of production in the country.
(4) The administration becomes efficient because all the powers are concentrated in the hands of one leader and there favouritism, nepotism and black-marketing are banished altogether.
(5) There is a unity and discipline in the country.
(6) Time is not wasted in unnecessary criticism and propaganda.