Mumbai- Sachin Tendulkar began his 41st birthday celebration by exercising his voting rights today. The batting icon tweeted a photograph of himself flaunting his inked finger, and urged fellow Indians to vote. Earlier, the legend appealed to all Indians to exercise their franchise in the ongoing Lok Sabha polls. In a post on his official Facebook page, Tendulkar, now a nominated Rajya Sabha member, urged his countrymen not to "underestimate" the power of their vote.