Several high-profile crossovers are expected in the coming days, informed political sources said.
Among them is a prominent UNP Parliamentarian and several prominent figures in the Joint Opposition, they added.
Meanwhile, discussions are underway with a number of SLFP leaders to draw their support to the New Democratic Front, of which Sajith Premadasa is the Presidential candidate.
Various rifts have occurred between the SLPP stalwarts and SLFP MPs at the campaign level due to sharp differences of opinions.
Several SLFP Parliamentarians were hooted at during SLPP campaign rallies over the past few days.