Mahinda Deshapriya, the Election Commissioner said the Western and Southern Provincial Councils would go to the polls on March 29, about the same time as the widely anticipated resolution by the UN Human Rights Council in Geneva against Sri Lanka's lack of progress on human rights accountability and reconciliation with the Tamil minority after a brutal three-decade civil war.
The resolution, the third in as many years, has been moved by the US. India had backed the previous two resolutions.
President Mahinda Rajapaksa dissolved the two provincial councils in December and has resorted to holding staggered elections as a test of his popularity among the majority Sinhala community and also with the aim of wearing down a fractured opposition.
The government has denied opposition claims that it is attempting to gain a domestic political advantage in the polls by whipping up nationalist sentiment over the UN resolution.
While the ruling coalition seems bent on using the UN resolution as a major plank of its poll campaign, the opposition has so far focused on breakdown of law and order and alleged widespread corruption in governance.