The state legislature is bicameral and consists of the Legislative Assembly and the Legislative Council. The Legislative Assembly consists of 224 members with one member nominated by the governor to represent the Anglo-Indian community. The term of office of the members is five years and the term of a member elected to the council is six years. The Legislative Council is a permanent body with one-third of its members retiring every two years.

The government is headed by the governor who appoints the chief minister and their council of ministers. The governor is appointed for five years and acts as the constitutional head of the state. Even though the governor remains the ceremonial head of the state, the day-to-day running of the government is taken care of by the chief minister and their council of ministers in whom a great deal of legislative powers is vested..

The secretariat headed by the secretary to the governor assists the council of ministers. The council of ministers consists of cabinet ministers, ministers of state and deputy ministers. The chief minister is assisted by the chief secretary, who is the head of the administrative services.

As of August 2021, the Government of Karnataka consists of 30 ministers including Chief Minister.
The Chief Minister of Karnataka is the chief executive of the Indian state of Karnataka. As per the Constitution of India, the governor is a state's de jure head, but de facto executive authority rests with the chief minister. Following elections to the Karnataka Legislative Assembly, the state's governor usually invites the party (or coalition) with a majority of seats to form the government. The governor appoints the chief minister, whose council of ministers are collectively responsible to the assembly. Given that he has the confidence of the assembly, the chief minister's term is for five years and is subject to no term limits.

This is a 3-tier system in the state with elected bodies at the village (grama), taluka and district (zilla) levels. It ensures greater participation of people and effective implementation of rural development programs. There is a Grama Panchayat for a village (grama) or a group of villages (gramas), a Taluka Panchayat at the taluka level and a Zilla Panchayat at the district (zilla) level.

All the 3 institutions are made up of elected representatives and there is no provision for nomination by the governor to any of these councils. Karnataka was the first state in the country to enact the Panchayat Raj Act, incorporating all provisions of the 73rd Amendment to the Constitution.

In 2014, Karnataka State Grama Panchayats Delimitation Committee was constituted by the government of Karnataka, with Chairman S G Nanjaiahna Mutt and 6 members. The joint secretary of the committee was Dr. Revaiah Odeyar. The report was submitted on October 30, 2014. This resulted in the implementation of Gram Panchayath Elections in 2015.

Karnataka Panchayat Administrative Service (KPAS), is the civil service of Karnataka state. The Rural Development and Panchayat Raj Department conducts exams to recruit candidates for the service. The KPAS officers are usually appointed as Panchayat Development Officers (PDOs). They are trained under the Abdul Nazeer Sab State Institute of Rural Development and Panchayat Raj (ANSSIRDPR), Mysuru.

The Karnataka Gram Swaraj and Panchayat Raj Act, 1993 (5) was substituted by Act 44 of 2015 with effect from 25.02.2016, as follows:

CHAPTER XVI 1 [Administration, Inspection, Supervision and Creation of Commissionerate of Gram Swaraj and Panchayat Raj]

Section 232B of the Constitution of the Karnataka Panchayat Administrative Service: The Government shall constitute a Karnataka Panchayat Administrative Service consisting of such category of posts from the rural development and panchayat raj department, the number of posts, scale of pay, method of recruitment and minimum qualifications shall be such as may be prescribed]. Inserted by Act 44 of 2015 with effect from 25.02.2016.