UDM leader Bantu Holomisa says National Assembly Speaker Baleka Mbete's attack on the judiciary illustrates her bias.
Parties have called on Mbete to recuse herself from presiding over the motion of no confidence in President Jacob Zuma which is expected to take place in August.
Mbete slammed the judiciary for "overreach" during her budget vote address and said certain judges are biased against the ANC.
Holomisa says Mbete is clearly a conflicted individual.
In so far as her attacking the judiciary, we feel that she is biased and is not honest to herself?— Bantu Holomisa, UDM leader
For her to attack the judiciary...could it be that she's not happy with this secret ballot case.— Bantu Holomisa, UDM leader
We have taken note of her utterances and instructions to ANC MPs to vote in favour of their President.— Bantu Holomisa, UDM leader
The UDM leader says opposition parties will examine the rationality of Mbete's reasoning, should she decide to deny a secret ballot vote.
We hope that for once, she will be impartial and take a decision for the benefit of the country.— Bantu Holomisa, UDM leader
He says opposition parties are making in-roads and gaining ground ahead of the 2019 national elections.
Opposition parties' leaders held a press briefing in Pretoria to respond to recent political events.
Take a listen to Bantu Holomisa reflect on the impact made by opposition parties: