"Phase 1 of Gujarat polls begin. Urging all those voting today to turnout in record numbers and vote. I particularly call upon youngsters to exercise their franchise," he tweeted.
On polling days, Modi usually tweets exhorting people to exercise their right to vote.
Eighty-nine seats go to polls today in phase one of elections and over two crore people are eligible to vote.
The second phase is on December 14, when votinng will be held in the remaining 93 seats.