Pro-democracy legislators yesterday agreed to start feasibility studies on launching a non-binding community referendum to push for the introduction of universal suffrage in 2007. But the Democratic Party warned that the controversial exercise should not go ahead if technical difficulties could not be solved. Speaking after a brainstorming session, independent Albert Cheng King-hon said the 25 pro-democracy legislators had reached a consensus to start feasibility studies. Academics and community groups including the Civil Human Rights Front will be invited to discuss plans at a meeting next Friday. But Lee Wing-tat, vice-chairman of the Democratic Party, warned that if a meaningful referendum was to be carried out by community groups, it would cost at least $5 million and involve teams of volunteers manning polling stations. 'We need to have a sober and detailed study on this to overcome the towering difficulties. The whole idea should be dropped if these difficulties are not solved. We are not talking about buying a bottle of Coke,' Mr Lee said. At the same meeting, the Democratic Party failed to convince other pro-democracy legislators to support its tax-cut plan.