(As Tamil Nadu gears up for the Assembly polls, every week, Arun Janardhanan decodes the electoral trends, political signals, and campaign moves shaping the contest.) In 1963, when the Congress was losing its organisational vitality, K Kamaraj, then the party’s national president, proposed what came to be known as the Kamaraj Plan. The idea was simple but radical: senior leaders holding powerful government posts should resign and return to full-time party work, allowing younger leaders to take over governance and electoral politics. Under that plan, several Union Ministers and Chief Ministers stepped down to strengthen the organisation. Six decades later, Tamil Nadu may witness a different version of that unfold. After months of negotiations with allies, including the Congress, Chief Minister M K Stalin appears to have largely settled the alliance arithmetic for the coming Assembly elections. But the more difficult conversation may now lie within his party, DMK. It is a question that every dominant party eventually confronts: what to do with its veterans. For Stalin, the challenge is unusually sharp. Several senior ministers …