How did the political landscape change after 1989 in terms of party representation in the Parliament?

A multi-party system with diverse representation emerged.

The 1990s ushered in another significant test to the dominant standing of the Congress party. However, this challenge did not lead to the ascendancy of any singular alternative party to take its position. As a result, a new phase characterized by a multi-party system emerged. It's important to note that a considerable number of political parties had consistently contested elections in our nation, resulting in a Parliament composed of representatives from diverse political backgrounds. The post-1989 period witnessed the proliferation of numerous parties in a manner where one or two parties no longer commanded the majority of votes or seats.