The coalition parties say they have gathered enough support to push for a motion to amend the constitution.
Chart Thai Pattana Party leader Chumpol Silpa-archa yesterday said more than 95 MPs had now signed on to support the motion, which was enough to submit it to parliament.
Mr Chumpol yesterday held talks with leaders of the Puea Pandin Party at a Bangkok hotel.
He said Puea Pandin and Chart Thai Pattana would work together to amend sections 190 and 94 of the charter.
Section 190 covers the requirement for the government to seek parliamentary approval before signing international agreements. The parties want to amend Section 94 to change the electoral system from large multi-seat constituencies to single-seat electorates.
