I need a Wikipedia editor

Left-wing activist groups have been hijacking and vandalizing pages relating to New Zealand events and personalities. The edits are often uncited and are opinion-based, yet trying to redact this politically-motivated content, even with detailed explanation and rationale, has reulted in my IP being blocked and the offending content being put right back in place.

I need help redacting the uncited, biased opinions from a specific page relating to New Zealand politican David Seymour. I have some text I would like to replace it - complete with mainstream, highly regarded sources such as New Zealand's own government-owned news network.