New Delhi, May 4 -- When a film star enters politics, the first question is usually whether charisma can translate into votes. In Tamil Nadu, where cinema and politics have long shared a porous border, that question has been asked for decades. But the more consequential question-what happens after the victory-has often been the harder one.

As a journalist and a commentator of many elections, I tend to believe that Vijay's entry into the chief minister's office marks a new phase in the state's political evolution, and it arrives with a complex mix of expectations, vulnerabilities, and structural tests.

The most immediate challenge is administrative. Vijay would be assuming office without the long political apprenticeship that shaped earl...