The rally is being seen as some sort of a relaunch of Rahul, who is being hailed as a "mature" leader who would restore the party's health after its downturn in Lok Sabha polls.
A senior party functionary said that besides the rally, Rahul will also be speaking in the Lok Sabha and is expected to take on the government after the second part of the Budget session begins on Monday.
With the Sunday rally being the first major public outreach event for the Congress Vice President after his leave, the party is pulling out all stops to galvanise support for the rally.
Top leaders Ahmed Patel, Digvijay Singh and others addressed a meeting of Haryana Congress leaders in North Avenue, while Singh, who is also the convener of the committee to chalk out plans for the rally, brainstromed with AICC secretaries at party headquarters to make the rally a success.
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Indicating that a generational change could happen in the party, Singh told the audience that he, Ahmed Patel and many leaders were made PCC chiefs at very young age of 38 and 33 and "now it is time for the youngsters".
"It is the era of youths. Time for our retirement has come. It is the nature's law. Old leaves ripen and then fall. New leaves then come. Youth is the flavour of the season. The leadership of youths will come and lead the country.