Constitution drafters have approved a proposal for Thailand to adopt its own version of the German electoral system.
The idea has been given the go-ahead in principle, but the Constitution Drafting Committee still has to ask the National Reform Council what it thinks about the plan, vice-chairman Suchit Bunbongkarn said.
Under the proposal, constituency and party-list representatives would be elected at a ratio of 200,000 voters to every MP.
Voters would get two separate ballot papers — for one their constituency and one for the party-list vote. All votes would then be taken into account when determining the final composition of parliament.
The prime minister would still be elected by the House. Political post-holders involved in corruption or undermining the fairness of elections would be barred from holding any future position of power, under Section 35(4) of the interim charter.
The CDC's third reform panel, which made the proposal, is focusing on creating effective checks and balances in the political system.
"We learned the hard way that when a political party or leader is strong, he tends to abuse power to build a patronage network and use corruption-prone populist policies. So the panel wants to address that," Mr Suchit said.
Under Germany's mixed-member proportional system, voters get a constituency and a party vote. The party vote determines the final share of seats.
Mr Suchit said he is also considering a charter proposal from Pheu Thai Party adviser Pokin Polakul. Mr Pokin believes the constitution must not include an amnesty clause for anyone involved in toppling the previous government.
Mr Suchit said he had accepted several proposals for consideration from other parties and political groups.
"Whether the CDC adopts or applies the proposals depends on deliberating the details, but the national interest must be the ultimate goal," he said.