Tural, there are numerous conferences every year. The main associative bodies do promote their own conferences along with others. I would suggest seeing the following associations:
International Studies Association: http://www.isanet.org/Conferences/San-Francisco-2018/Call
American Political Science Association: http://web.apsanet.org/apsa2017/
European Consortium for Political Research: https://ecpr.eu/
SAAPS Regional Colloquium to be held at the University of the Free State (QwaQwa Campus) on 28 and 29 September 2017 (South Africa). "Is it the end of the world as we know it? The study of Politics in uncertain times". Contact Eben Coetzee at [email protected] or Alta Vermeulen at [email protected] for more information