Lok Sabha elections began at 7 am on Friday with 102 constituencies across 21 states and UTs voting in first phase in the world's biggest elections. There are 1,625 candidates in the fray. Arunachal Pradesh, Uttarakhand, Rajasthan and Tamil Nadu are among states voting today. Next phases will be on April 26, May 7, 13, 20, 25 and June 1.