On Friday, in the largest of the seven phases, 166 million voters in 102 constituencies across 21 states and territories will vote
"Everyone is aware of the extreme conditions at Siachen. Overcoming every challenge our soldiers stand firm, protecting our motherland," Modi said in a tweet.
"Be it the altitude or bitter cold, nothing deters our soldiers. They stand there, serving our nation. They make us truly proud.
"Am going to Siachen with a message from each and every Indian to our soldiers: that we stand shoulder to shoulder with you," he said in tweets from his personal Twitter account.