Electoral system for national legislature

1991 Constitution, Articles 105-108

http://thailaws.com/law/t_laws/claw0015.pdf

1979 Election of Members of the House of Representatives Act, Articles 6 and 77

This legislation appears to have remained in place through the period of the 1991 military coup and the adoption of the second 1991 constitution after its failure.

Constituencies electing between 1-3 members