Factbox-What happens next after Thai PM Srettha Thavisin's exit?

BANGKOK (Reuters) - Thailand's Prime Minister Srettha Thavisin was dismissed on Wednesday by the Constitutional Court for a breach of ethics in appointing to his cabinet a former lawyer who was briefly imprisoned 16 years ago.

Following are details on the process for choosing a new leader and potential candidates.

WHAT HAPPENS NEXT?

- Thailand's cabinet will take on a caretaker role with Commerce Minister and deputy premier Phumtham Wechayachai becoming acting prime ministers.

- Parties must decide who they will nominate and vote for as the next premier based on a list of candidates that was submitted prior to the 2023 poll.

- It is expected not all candidates would be put forward, with horse-trading likely to take place between parties in return for cabinet positions.

- The house speaker will convene parliament for the lower house to vote for the next prime minister.

- There are no rules specifying when parliament must convene to hold the vote.

- To become prime minister, a candidate needs the backing of more than half of the lower house's current 493 lawmakers, or 247 votes. If they fall short, the house must convene again later and repeat the voting process, with a chance for other candidates to be nominated.

- The 11-party coalition government has 314 seats in the lower house.

- The new premier must appoint a cabinet, which then must present its policies to parliament before it can start governing.

WHO ARE THE LIKELY CANDIDATES FOR PM?

- Paetongtarn Shinawatra, 37, daughter of the billionaire figurehead of the Pheu Thai Party, Thaksin Shinawatra. She is also party leader and would be the third Shinawatra to take the top job if chosen by parliament.

- Chaikasem Nitisiri, former justice minister and Pheu Thai party stalwart.

- Anutin Charnvirakul, Interior Minister and deputy premier who successfully pushed for the liberalisation of cannabis in Thailand. He is leader of the Bhumjaithai Party, the second-largest partner in the coalition government.

- Energy Minister Pirapan Salirathavibhaga, a former justice minister who heads of the conservative Thai Raksa Chart party.

- Prawit Wongsuwan, influential former army chief who leads the conservative and military-aligned Palang Pracharat Party. Notorious political deal-maker Prawit was involved in the last two coups against Shinawatra governments.

(Compiled by Chayut Setboonsarng and Panarat Thepgumpanat; Editing by Martin Petty and Miral Fahmy)