The BJP president hit out at Kerala Chief Minister Pinarayi Vijayan, alleging that the maximum killings of BJP and Rashtriya Swayamsevak Sangh workers have taken place in the latter's home district.
The high command's choice of Thennala Balakrishna Pillai and Vayalar Ravi for the election to the Rajya Sabha appears to have prompted the resignation.
The Jan Raksha Yatra from Payyannur will travel through the state before ending in Thiruvananthapuram on October 17.
Bharatiya Janata Party chief Amit Shah will on Monday launch a 15-day march in Kerala to target the state's Communist Party of India-Marxist government with the BJP accusing the Left party of being on a "killing spree" against its workers.
Adityanath says there is no scope for political violence in democracy.
Shah also attacked the Congress and said "the party was finished in the country due to corruption and family rule."
Rahul Gandhi slammed the Modi government, accusing it of being against farmers, labourers, students and the poor.