Indian paramilitary forces have shot and killed two Police opened fire to control crowds of stone-throwing demonstrators in Baramulla town, about 55 kilometres (34 miles) north of the summer capital Srinagar, killing two people including a teenage student, a police officer said.
The violence came on the eve of the second round of seven-stage state elections which wind up in late December.
Violence in the past four months has left nearly four dozen dead and hundreds wounded in Kashmir.
The region has also been beset by mob violence triggered by the allotment of land for a Hindu shrine -- a decision that caused a sharp divide between Hindus and Muslims. Indian authorities have detained several separatist leaders.
Hundreds of thousands of people have attended four previous marches organized by separatists, who favor independence from India.