"Pranab Mukherjee telephoned Buddhadeb Bhattacharjee this morning from Delhi", CPI(M) sources told PTI.
It was, however, not known what transpired between Mukherjee and Bhattacharjee, a senior member of CPI(M) politburo.
The sources said, the issue of the Presidential election might have figured given the political situation when SP leader Mulayam Singh Yadav and Trinamool Congress supremo Mamata Banerjee have virtually rejected Congress president Sonia Gandhi's two choices and announced three names instead for the highest Constitutional post.
CPI(M) Politburo member Brinda Karat has termed as 'unprecedented' the proposal mooted by Yadav and Banerjee to make Prime Minister Manmohan Singh a candidate for the Presidential poll, saying it showed lack of principles in the UPA coalition.