A guilty finding for controversial MP Geoff Shaw would have disproportionate and ''horrendous'' consequences that would result in him being kicked out of Parliament, so he should be placed on a diversion program, his defence argues.

If Mr Shaw, who holds the balance of power in Parliament, is placed on a diversion program, rather than found guilty, he can remain a MP.

Geoff Shaw leaves court. Credit:Penny Stephens

A byelection in Frankston could topple the Napthine government.

A confident but tight-lipped Mr Shaw sat in Melbourne Magistrates Court on Wednesday and heard that the matter of 24 charges against him had been resolved and he would now face a ''rolled-up'' charge of obtaining financial gain by deception over the use of a fuel card for $1250.