The Constitution Court on Wednesday ruled to hear 15 prosecution witnesses from a list of 80 submitted by prosecutors for the Democrat Party dissolution case.
The ruling came after the session for the examination of evidence on alleged Bt29 million mishandling of party financial records, an offence punishable by disbandment.
The high court instructed the prosecution to file testimonies in writing for those not summoned to take the witness stand.
Presiding judge Udomsak Nitimontri has scheduled for prosecution witnesses to testify in four sessions, on August 9, which coincides with the prosecution opening statement, August 23, August 30 and September 6.
The high court will subsequently rule on the hearing of defence witnesses.
Democrat chief adviser Chaun Leekpai led the defence team for the evidence examination. The defence has submitted documents containing 1,500 pages to rebut the charges and plans to call about 58 witnesses.