Differences between Sociology and Political Science:
Sociology studies all aspects of society whereas conventional Political Science focused on the study of power embodied in formal institutions such as the state, government, political parties etc.
Sociology stresses on the interrelationship between different social institutions like religion, education, politics etc whereas political science has tended to focus on the processes within the government.
Convergence of Sociology and Political Science:
Despite these differences there are similar interests of researchers as well as increased interaction of methods and approaches between sociology and political science. The interface of political science and sociology is termed as political sociology. It acts as a bridge between the two subjects. For example, political sociology studies how religious and caste identities are used as vote banks.