Prachachat Party leader Wan Muhammad Nor Matha confirmed on Tuesday the party's intention of forming a coalition government with the Pheu Thai Party, saying he saw no reason for the party to switch sides.
Prachachat, which won six constituency seats in the South, is among six parties that have pledged allegiance to Pheu Thai in the wake of the March 24 poll.
At that time, the Pheu Thai-led alliance claimed it had secured 255 House seats.
Speaking after talks with key members ahead of May 9, when the official poll results will be released, Mr Wan Nor said the party's coalition stance remained unchanged.
"We won't form a coalition government with the Palang Pracharath Party [PPRP] and nothing will change our mind," he said.
He said any moves to form a new government would have to wait until May 9, and urged the Election Commission (EC) to do its job swiftly and thoroughly.
Asked if the party was likely to be swayed by the recent flood of petitions seeking a probe into the qualification of MP candidates, the Prachachat leader said that would be unlikely.
Mr Wan Nor doubted the National Council for Peace and Order (NCPO) would be around to wield its power and back a PPRP-led coalition, if the pro-regime party manages to set up a government.
The PPRP was said to be pushing to form a rival coalition grouping but its alliance would have had fewer MPs than the Pheu Thai-led camp.
However, with all 250 senators having been appointed by the NCPO, the party is believed to have a good chance of succeeding in nominating incumbent Gen Prayut Chan-o-cha to return as prime minister.
Mr Wan Nor said if the Pheu Thai-led alliance were to succeed in forming a government, it should amend the charter, which has been criticised for allowing the regime-appointed Senate to join the House of Representatives in choosing the premier.
