"I am certain that we will be voted to power once again," Sule told reporters.
Earlier in the day, she visited Jamner in the district and addressed a gathering of women.
Responding to a query, Sule, daughter of NCP chief and Union Agriculture Minister Sharad Pawar, said it was responsibility of all to fight in "unison" and avoid factionalism.
The party candidate for Raver Lok Sabha seat Mansih Jain and other party leaders were present on the occasion.
"NCP has fielded Manish Jain who is well-conversant in Marathi, Hindi and English. He will work very well in the field," she said.