He said the choice was a happy development for the nation and was welcomed by all sections of the community in India and abroad.
"Modi is an experienced politician and had conducted three elections in Gujarat State winning all of them. He has an unblemished track record in Indian politics and has proved to be an able administrator," Swamy said on the sidelines of a function in Long Island near here.
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The decision has sent shock waves in the Congress camp and its senior leaders are spending sleepless nights as Modi could ensure a clean sweep for BJP in the ensuing elections, he said.
When asked about the dissension within the NDA, he said Bihar Chief Minister Nitish Kumar is the only leader who is not favouring Modi at this point of time. Also Kumar is also not clear now and he may back Modi nearer to the election date. Of the seven members of NDA, six support Modi, he said.