Raut said the NDA allies were one after the other deserting the BJP.
There was angst against the BJP, thus the party might have started a reconciliatory measure, he said.
Asked if the Sena will continue with its stand of going solo in all the forthcoming elections, Raut said party chief Thackeray had taken a call on not forging an alliance after due considerations.
"This decision was taken keeping people's sentiments in mind. I don't think there will be any change in this stand," the Rajya Sabha member said.
Mungantiwar said Shah was going to meet Thackeray and other people as a part of the BJP's nationwide outreach programme.
"Amit Shahji is touring the entire country as part of the BJP's 'Sampark for Samarthan' programme. His meet with Uddhavji also is a part of this programme. Along with the Sena president, he will be meeting around 15 to 20 people from different sectors of society," Mungantiwar said.
"This meet has nothing to do with any bypolls. It is an outreach effort for 2019 (elections)," he added.
The BJP has launched the 'Sampark for Samarthan' exercise to mark the fourth anniversary of the Modi government as it prepares for the 2019 Lok Sabha polls.
Around 4,000 BJP functionaries, including chief ministers, Union ministers and panchayat members, across the country will contact one lakh people who are recognised names in their fields to inform them about the government's achievements.