"Our decision to support DMK was only for the Rajya Sabha polls. We cannot say anything more. Lok Sabha polls are sometime away and it is too early to say anything on that," Wasnik told reporters here.
Congress took the decision to support DMK after consultations with all senior party leaders and MLAs in the state, Wasnik, in-charge of party affairs in Tamil Nadu, Kerala and Puducherry, said.
Meanwhile, TNCC president B S Gnanadesikan said that Congress cannot be isolated by any party.
DMK, which snapped its nine-year-old ties with UPA in March on the Sri Lankan issue, had sought the support of five MLAs of Congress to ensure re-election of Kanimozhi in the June 27 Rajya Sabha polls, as it had only 23 MLAs in the 234 member Assembly.