Is the Senate really involved in the selection of the Prime Minister?
If the Constitution of the Kingdom of Thailand enacted on 6 April B.E. 2560 (2017) is still the currently valid version, then the selection, endorsement, approval and appointment of the new Prime Minister is being carried out in accordance with Sections 158 and 159 of this constitution.
I am surprised that the constitution makes no mention about the Senate regarding the selection and endorsement of the Prime Minster. Am I reading an obsolete version of the constitution?
Source: https://www.krisdika.go.th/documents/67673/181643/837163_0001.pdf/3d0aab10-e61f-03a4-136a-75003ce4c625
Thai text: https://library.senate.go.th/document/Ext27142/27142037_0003.PDF