Why did star campaigners of both BJP and Cong avoid campaigning in MP?

Why did the star campaigners of both the Bharatiya Janata Party and the Congress avoid campaigning for their most senior leaders in Madhya Pradesh? Prime Minister Narendra Modi addressed seven public meetings in the state but none of them was for a senior leader or minister. He did not visit Morena or Tikamgarh, from where cabinet ministers Narendra Singh Tomar and Virendra Khatik are contesting. Modi also gave Bhopal a miss — Sadhvi Pragya Singh Thakur is contesting against Congress leader Digvijaya Singh from the seat. Congress President Rahul Gandhi has done something similar. He held rallies at 17 locations