The resolution, authorising her, was interestingly moved by Finance Minister and senior leader Pranab Mukherjee, who is himself considered the front runner in the race for the President's post.
The resolution was adopted at the day-long meeting of the CWC, chaired by Gandhi, unanimously, party sources said.
Major political formations like the Congress-led UPA and NDA are yet to announce their strategy for the next month's Presidential election, while AIADMK and BJD have declared former Speaker P A Sangma as their candidate.