KATHMANDU, June 9: A mass gathering called by the pro-royalist Rastriya Prajatantra Party Nepal (RPP-N) has got underway at Khullamanch in the capital Saturday, a day after a similar meet organized by 22 opposition parties. RPP-N leaders, including its Chairman Kamal Thapa, are scheduled to address the meet, largely seen as a test of how much public support the party has now, especially when the Constituent Assembly (CA) has dissolved failing to deliver a new federal constitution.