List of Upcoming Elections in India
Bihar will be going to polls this year and that would be an election to watch out for. The next big election after that would be the one in West Bengal.
The previous election in Bihar was won by the JD(U)-RJD and Congress combine. However the government fell after Nitish Kumar of the JD(U) aligned with the BJP.

In the previous West Bengal elections, none stood a chance against Mamata Banerjee and her Trinamool Congress, which easily retained power. In 2021, the BJP would be looking to topple the TMC and come to power for the first time in the state.
Here is the full list of upcoming elections in the various states:
Andhra Pradesh: May-June 2024
Arunachal Pradesh: April-May 2024
Assam: May 2021
Bihar: November 2021
Chhattisgarh: December 2023
Delhi: Jan-Feb 2025
Goa: May 2022
Gujarat: December 2022
Haryana: Sep-Oct 2024
Himachal Pradesh: December 2022
Jammu and Kashmir: Jan-Feb 2021
Jharkhand: Nov-Dec 2024
Karnataka: May 2023
Kerala: May 2021
Madhya Pradesh: Jan 2023
Maharashtra: Sep-Oct 2024
Manipur: Mar 2022
Meghalaya: March 2023
Mizoram: Dec 2023
Nagaland: March 2023
Odisha: May-Jun 2024
Puducherry: June 2021
Punjab: Mar 2022
Rajasthan: Jan 2023
Sikkim: Apr-May 2024
Tamil Nadu: May 2021
Telangana: Dec 2023
Tripura: Mar 2023
Uttar Pradesh: Mar 2022
Uttarakhand: Mar 2022
West Bengal: May 2021
Lok Sabha elections: May 2024