The Indian parliamentary system suffers from the following drawbacks:

1. Multiplicity of Political Parties:

The existence of too many political parties has resulted in unstable governments and even challenges with government formation. Because of the proliferation of political parties and coalition politics, a lot of governments have toppled. As a result, it is impossible to have a strong opposition in the legislature, which is required for parliamentary government.

2. Evil of Defection:

Defection has been a danger to the foundation of our parliamentary system, resulting in unstable governments. To remedy this calamity, Parliament passed the 52nd Amendment and inserted the 10th Schedule to the Constitution in 1985. It established the procedure for disqualifying parliamentarians on the basis of defection. A member of parliament or state legislature was considered to have defected if he either voluntarily resigned from his party or violated the party leadership's directive on voting. If an independent member joins a political party, they will be disqualified. Nominated members who were not members of a political party had six months to join one. Following that time, they were treated as either party members or independent members.

There were a few exceptions to the rule as well. Any person chosen as speaker or chairman had the option of resigning from his party or rejoining it if he resigned from that position. A party could be merged with another if at least two-thirds of its legislators voted in favour of the merger. Splitting parties was once permitted under the law, but it is now prohibited.

4. Leadership in National Parties:

The lack of unity and cohesion in national parties, as well as the behaviour of members of different groups inside the party, have reduced the authority of the party's leader, who becomes Prime Minister.

It has been observed that the Prime Minister must dedicate much of his time on resolving party issues, leaving little time for him to oversee the work of the nation.

The Prime Minister must appease various parts and groups within his party by appointing them to ministerial positions.

5. Illiteracy of Voters:

Our electorate is ignorant and politically immature in large numbers. Their right to vote is being eroded on the basis of caste, religion, and wealth, among other factors. Illiterate voters are unconcerned about national issues.

6. Growth of Regional Parties:

The rise of local and regional parties arouses parochial and provincial attitudes. This has also harmed the functioning of the parliamentary system. These regional parties seek greater autonomy for the states, endangering the nation's unity and integrity.

7. Government by Non-Experts:

As the ministers appointed from elected representative are not experts in their field. Thus, it reduces the efficiency of decision-making.

8. Violates the Principle of Separation of Powers:

In this system of governance, the executive and legislature are not fully separate. This is an infringement on the principle of separation of powers.