Kanimozhi was among the six candidates elected for Rajya Sabha voting for which was held. She was expected to garner 32 votes, including the five from Congress, but had to settle for 31 as one vote was declared invalid.
The DMK chief was also generous in thanking Congress for its support.
"I dedicate my thanks to those alliance parties, especially Congress and Putihya Tamizhagam and MMK," he said adding Kanimozhi was "dutybound" to serve the country by highlighting the party's ideals in the Upper House.