Because as per UN resolution, for a plebiscite to happen, Pakistan has to move and vacate it's army from the region, that is one of the very first conditions for an election to take place, I know you people think of Indians as some kind of blood thirsty monsters eating kashmiris for breakfast, but it is actually Pakistan which is obstructing the referendum from happening. That is why i told you to read the resolution first, most Pakistanis who blame India for kashmir issue have no idea that it is actually their beloved country which is blocking the plebiscite.