How to link your Aadhaar card with Election ID card.

The process is simply as sending an SMS to any contest.

Through Your Mobile Phone

SMS on the number 51969.Write your message in the following format:ECILINK <EPIC Number> <Aadhaar number>e.g. ECILINK IJH3456780 123456789123You will get confirmation SMS

Through Our Web Portal

Visit our portal http://nvsp.inSearch your name by clicking the box "Search Your Name box" by filling your name, name of your relation, state and the constituency or searching your name by filling your EPIC Number.As you see your details, please click the button ‘View’ on the extreme left of the row.Feed your Aadhaar number and your name as in Aadhaar data.Register your mobile number and/email address to get confirmation of registration through SMS and/email.

Source : http://eci.nic.in/eci/nvsp.html