Sri Lanka's political opposition is warning of possible vote-rigging and violence ahead of next week's presidential election.

And as both candidates wind up their campaigns, police say at least four people have been killed and hundreds wounded in clashes between rival supporters.

The ruling party has denied allegations it is planning fraud and has appointed an independent election commissioner - Dayananda Dissanayake.

Al Jazeera's Mike Hanna travelled to Sri Lanka to find out what people make of the presidential vote and what it might mean for them now that the civil war is over.