All Victorian Liberals need to take responsibility for last year's state election loss rather than shift blame to Matthew Guy, Opposition Leader John Pesutto says.
Mr Guy was slammed in a post-election review from party president Greg Mirabella, who described the former opposition leader as widely disliked.
He said the public had nothing to vote for because the coalition's election strategy was "relentlessly negative" and too focused on Daniel Andrews, according to excerpts published in The Age.
Mr Pesutto disagreed Mr Guy was to blame for the November loss, instead saying all Liberals needed to take stock after the defeat.
"Any political party, in good times and in bad, must take collective responsibility and work collectively to make the most of the opportunities they have," Mr Pesutto told reporters on Saturday.
"There is no purpose to be served in singling people out. Matthew was leader, he was part of a team, we were all part of that team.
"The whole Liberal Party needs to take collective responsibility."
In an interview with The Age, Mr Guy called for Mr Mirabella's resignation, saying the post-election report was embarrassing and based solely on the party president's personal vibes.
Mr Mirabella's position was a matter for Liberal Party members, Mr Pesutto said.
He also brushed off suggestions Mr Guy should stop commenting on the election.
"Matthew just wants to be able to get on with being a parliamentarian representing the people of Bulleen," Mr Pesutto said.
"Like all of us, we have a job to do. And I know Matthew just wants to be able to do that.
"In fairness to him, we shouldn't be focusing on the past."
Mr Pesutto in December vowed to lead a constructive opposition after the party secured only 29 per cent of the primary vote in the November poll - its worst result in decades.
The coalition secured 31 seats in the lower house, with Labor going one better than the "Danslide" election of 2018 to claim 56 of a possible 88 seats.
