One cannot be registered as a voter twice – whether in the same constituency or in different constituencies. This is as laid down in Sections 17 and 18 of the Representation of the People Act, 1950. Having two voter ID for registration as a voter twice may be an offence.
I have already answered a similar question in detail and the answer to that question may be seen at the following link: http://tilakmarg.com/answers/is-it-an-offence-to-have-two-voter-ids-for-election-in-india/
You should surrender one voter ID to the issuing authority.
Dr. Ashok Dhamija is a New Delhi based Supreme Court Advocate and author of law books. Read more about him by clicking here. List of his Forum Replies. List of his other articles. List of his Quora Answers. List of his YouTube Videos.