Johor BN has lost its two-thirds majority in the state assembly with the departure of Jorak assemblyperson Shahruddin Salleh from Umno.

This will be the first time the Umno stronghold is governed without a two-thirds majority, said Amanah chairperson Aminolhuda Hassan said today.

"The composition of assemblypersons in the Johor state assembly has now changed following the statement from Parti Pribumi Bersatu Malaysia (Bersatu) president Muhyiddin Yassin yesterday about the appointment of Shahruddin as the party's secretary-general," Aminolhuda said in a statement.

He said since Shahruddin, the former Pagoh Umno vice-chief, has joined Bersatu, the latter's party constitution stipulates that he automatically loses his old party membership.

"This means that the number of assemblypersons from BN Johor has decreased from 38 to 37, while the opposition has increased from 18 to 19 assemblypersons in Johor," he said.

The main implication is BN can no longer unilaterally amend the Johor state constitution.

Aminolhuda predicted that even more Johor assemblypersons from Umno would leave the party before the dissolution of the state assembly.

Welcoming Shahruddin to the opposition, he said he hopes they can work together to defeat the Umno/BN government in the coming general election.