Superstar Rajinikanth cast his vote in Chennai in the second phase of Lok Sabha elections today. He greeted photographers and smiled for cameras as he came out of the polling booth. In Tamil Nadu, by-elections on the 18 assembly seats are being held along with the Lok Sabha elections. The 234-member assembly has 22 vacancies, 18 of them due to disqualification of rebel lawmakers who have joined the team of TTV Dhinakaran.