The survey was carried out by recruitment consultancy The Right Ethos, which finds campaigners jobs with charities.
It looked at all 550 people on its database and found that, of the 80 who mentioned an involvement with a political party on their CVs, 45 per cent had a link with the Liberal Democrats, 31 per cent with Labour and 19 per cent with the Conservatives. Only 5 per cent favoured the Green Party.
Brian Lamb, acting chief executive of the RNID and a member of the Advisory Group on Campaigning and the Voluntary Sector, said the results defied conventional thinking. "This challenges the view that voluntary sector campaigners are biased towards the Labour Government," he said. "The Lib Dems are over-represented and there is a very strong representation from the Tories."
However, Lamb denied that having a clear political affiliation can compromise campaigners' ability to do their jobs. "Campaigners are driven more by the commitment to achieving change for their issues," he said. "This is more important than the political affiliations they hold."
Sheila McKechnie Foundation chief executive Claire McMaster agreed: "Your political views are not important if you are committed to an issue," she said.
Hazel Parsons, national campaigns manager at Shelter, said she believed the results were representative of the campaigning profession as a whole.
"Campaigners have been drawn from all parts of the political spectrum," she said. "We have campaigners of all ages, backgrounds, religions and political persuasions."
Jonathan Ellis, director of policy and development at the Refugee Council, welcomed the findings. "The study shows a good cross-section of people with different political affiliations, which can only be a good thing for a robust voluntary sector," he said.