MEMBER for Mildura Ali Cupper will join forces with influential Victorian Upper House MP Fiona Patten in a new coalition to "change Victoria for the better".

In a bombshell announcement, Ms Cupper will on Friday become the Deputy Leader of Ms Patten's Reason Party as she does "whatever it takes" to "score the biggest wins I can for Mildura".

Ms Cupper insists she will maintain her independence i...