Voter support for Keira MP David Campbell has not wavered despite the gay sex scandal that has shaken his private world.An exclusive Mercury-IRIS poll of 300 Keira voters conducted this week showed Mr Campbell's popularity remains steady - a result in line with the sympathetic public mood since his shock outing.When asked about their intention to vote for Mr Campbell after the events of recent weeks, 55 per cent said their preference was unchanged.While some voters have been turned off the embattled MP, he has won the affections of an equal number. One in five said they were less likely to vote for Mr Campbell following the scandal, but the same proportion were now more likely to vote for him.The swing of support towards the former roads and transport minister was most marked among those aged over 55.The ALP has also won slight ground over the Liberal Party in Keira since December, according to the poll. The Liberals now trail the State Government 55 per cent to 45 per cent on a two-party preferred basis.The result is sure to bolster Mr Campbell, who says he is determined to shake off the controversy and stand at the next election.Responding to the poll, Mr Campbell said he never took his electoral support for granted."(I) am very grateful and humbled by it, particularly over the past two weeks which have been very difficult," he said.The encouraging result could also serve as a critical indicator for the ALP party machine which is said to be concerned the scandal has severely dented Mr Campbell's public appeal.While the party executive insists the candidacy will be determined by a grassroots ballot, rumour is rife that the party is considering endorsing another candidate.Speaking exclusively to the Mercury upon his much-watched return to Parliament this week, Mr Campbell said a huge groundswell of support had firmed his resolve to continue in public office."I've been to the supermarket, the coffee shop, my electorate office, and I've had thousands of emails, letters and cards which indicate I have every support and right to be (back in Parliament)," he said.An IRIS spokesman said the poll reflected the empathy that had emerged for Mr Campbell since he was filmed leaving a gay sex sauna."Certainly (after) the happenings of recent weeks, support for the sitting member for Keira hasn't wavered," the spokesman said.