There are two separate ways to move a no-confidence vote against Prime Minister Najib Abdul Razak in the upcoming parliamentary sitting, said Bersih vice-chairperson Thomas Fann.

Apart from having MPs table a motion in the Dewan Rakyat, he said the lawmakers can also opt to vote down Najib's budget proposal after it has been debated.

"One (method) is a motion moved by any MP. If it is allowed, then there would be a vote of no-confidence or confidence.

"The other opportunity comes after the prime minister has presented his budget and Parliament has debated on it.

"The MPs can vote to reject the budget, and that would be equivalent to a vote of no-confidence against the prime minister," he told a press conference in Petaling Jaya today.

The upcoming parliamentary sitting runs from Oct 19 until Dec 3, while next year's budget will be tabled on Oct 23 during the sitting.

Under the Article 43(2)(a) of the Federal Constitution, the Yang Dipertuan Agong is supposed to appoint a MP "who is likely to command the confidence of the majority" of MPs as prime minister.

However, if there is no mechanism to conduct a no-confidence vote , Bersih deputy chairperson Sarajun Hoda Abdul Hassan said Najib should then call for a vote of confidence in his own administration.

"Bersih urges Najib to conduct a vote of confidence if he truly believes that he as the confidence of the majority of the MPs in parliament," he added.