The Mainpuri lok sabha bypoll is crucial for the BJP. In the 2019 national elections, the party reduced Mulayam Singh Yadav's winning margin on the seat to less than a lakh votes. Led by Uttar Pradesh Chief Minister Yogi Adityanath Its big guns are out campaigning for the party's candidate on the seat. The party is also conducting door to door campaigns - attacking the Samajwadi Party and its current chief Akhilesh Yadav.