A man walks past a banner of TVK chief Vijay in Chennai. PTI Tamil Nadu Governor Rajendra Arlekar’s decision to delay the swearing-in of Tamilaga Vettri Kazhagam (TVK) leader Vijay as Chief Minister puts the spotlight back on the debate pitting the Governor’s gubernatorial discretion against the democratic mandate of the people. Conventionally, the single largest party stakes its claim and is invited to form the government, and prove its majority on the floor of the house. However, Governor Arlekar is learnt to have asked Vijay to submit proof of support from at least 118 legislators — the majority mark in the 234-member Assembly. TVK currently has 108 MLAs; with Congress’s five-member support, the number rises to 113.…