Rahul Gandhi, Prashant Kishor had last collaborated in the Congress's failed campaign for 2017 UP polls
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Prashant Kishor, who has held a series of political meetings in the past few weeks, was seen arriving at Rahul Gandhi's home for the meeting.
Sources said the Congress leader's sister Priyanka Gandhi Vadra had cancelled a meeting on Uttar Pradesh to meet with Mr Kishor.
The meeting takes place against the backdrop of efforts to broker peace between the Congress's top two in Punjab ahead of polls next year - Chief Minister Amarinder Singh and his chief in-house critic Navjot Singh Sidhu. Both the Gandhis have met with Amarinder Singh and Navjot Sidhu separately in recent weeks.
In 2017, Mr Kishor was instrumental in bringing Mr Sidhu to the Congress, just before the Punjab polls. Mr Sidhu, who quit as a BJP Rajya Sabha member, was believed to be vacillating between the Congress and Arvind Kejriwal's Aam Aadmi Party (AAP).
But not long after the Congress won Punjab, powered by Mr Kishor's strategy, Amarinder Singh and Mr Sidhu fell out. Two years later, the cricketer-turned-politician quit the Punjab cabinet, feeling sidelined.
Mr Sidhu met with Priyanka Gandhi for four hours and tweeted a photo with her. Priyanka Gandhi reportedly facilitated his meeting with her brother, who had earlier told reporters he had no meeting with the sulking Punjab leader.
Days later, Amarinder Singh met with Congress president Sonia Gandhi in Delhi and later told reporters: "I don't know anything about Sidhu saab. Whatever is the decision, whatever the Congress president wants, we will follow it."
But Mr Singh has reportedly been resistant to ideas that involve a massive upgrade for Mr Sidhu in the Punjab government and party. After the last meeting, Congress sources had talked about a formula in which Amarinder Singh would stay Chief Minister and the Punjab Congress would be revamped to accommodate Mr Sidhu.
Mr Kishor had also met with Amarinder Singh last week. Credited with many election victories across the political spectrum, the strategist also crafted Amarinder Singh's 2017 Punjab campaign.
Rahul Gandhi had last collaborated with Prashant Kishor in the Congress's failed campaign for the Uttar Pradesh election in 2017. The Samajwadi Party-Congress alliance flopped and the BJP came to power.