Under his leadership, the Justice Party won the 1930 Madras Assembly elections and Munuswamy Naidu served as First Minister from 1930 to 1932.

[4] Munuswamy Naidu had his early education at Madras Christian College[5] and graduated in law and practised as a lawyer.

In the elections held in October 1930 in Madras Presidency, the Justice Party fielded 45 candidates and was in an alliance with the Ministerialists.

[9] As the Tamil Nadu Congress Committee did not participate in the elections,[9] the Justice Party swept to power without encountering any serious opposition.

[10] The Justice Party secured an overwhelming majority in the districts of Vizagapatam, Chingleput, West Godavari, Bellary, Trichinopoly and Tinnevely.

[16][17] This "ginger group" accused Munuswamy Naidu of having a soft corner for the Indian National Congress and Swarajists.

I had no prejudice against any one, but in choosing my colleagues I had to be guided by the feeling in the party as a whole...The choice that I eventually made was not agreeable to the Hon.

[20] This marked the end of Munuswamy Naidu's influence in the party and he gradually faded from limelight.

[23][24] At a tripartite conference between the Justice Party, Ministerialists and Constitutionalists in Madras in 1929 a resolution was adopted recommending the removal of restrictions on Brahmins joining the organization.

[24][25] At this Confederation, Munuswamy Naidu spoke: So long as we exclude one community, we cannot as a political speak on behalf of or claim to represent all the people of our presidency.

If, as we hope, provincial autonomy is given to the provinces as a result of the reforms that may be granted, it should be essential that our Federation should be in a position to claim to be a truly representative body of all communities.

But surely our Federation will not thereafter be open to objection on the ground that it is an exclusive organization[24]However, the resolution faced strong opposition and was eventually withdrawn.