The Western Cape ANC's battle to topple the DA from power in the province has been made even harder following a glowing endorsement of the DA-led provincial government by the national assembly.

Outgoing Western Cape premier Helen Zille revealed on Wednesday that she had received a note of congratulations from national assembly speaker Baleka Mbete, praising the performance of her provincial government since the DA came into power 10 years ago.

The note is based on approval of a DA motion by a sitting of the assembly in February 2019.

It appeared to be one of those politically bizarre moments where the majority ANC in the house - which regularly blocks any DA attempts to tout its record that where it governs, it governs best - may have been caught napping.

The motion outlining a fabulous track record of the DA in the Western Cape was passed without objection by the ANC or any other party.