The list of research project topics Dr. Walsh gave you provides great keywords, as do the assigned readings for the course. Here's a link to the research projects topics list:
Encyclopedias can supply a good overview of a topic. These overviews will include keywords that can help you develop a search. Search this database for encyclopedia articles:
Credo Reference-- This resource provides articles from over 1,000 reference works.
The library has created a Subject Page devoted to resources for Political Science research. The Subject Page is found at this link:
You may also follow this path from the Library Resources web page:
Library Resources web page > Databases by Subject > Political Science and Government