A Supreme Court trial will be held next month to decide if the Victorian election was invalid.

Justice Jack Forrest on Wednesday set down a February 25 trial date after a petition was lodged by unsuccessful Palmer United Party candidate Maria Rigoni claiming the Victorian Electoral Act had been breached before November's election.

Palmer United Party candidate Maria Rigoni is challenging the Victorian election.

Ms Rigoni, the PUP candidate for the Northern Metropolitan Region in the Legislative Council, claimed the Victorian Electoral Commission allowed constituents to vote before election day without signing a pre-poll declaration.

Her petition is seeking to have the election declared void in all seats. A record 1.1 million Victorians cast a pre-poll vote before polling day on November 29.