This is just a brief sample of how you might get started and proceed with a research question about the electoral college. Look at the Wikipedia page too, as much for the bibliography as anything else.
A good start is with law reviews for detailed analysis on election topics, which means searching NexisUni for the law reviews. For other scholarly articles start with International Political Science Abstracts, though OneSearch may also have helpful resources.
The article below is from elsewhere in this libguide, but is a perfect example of a law review.
Keep in mind this is a very general examination of the electoral college. You'd probably want to focus even more than what is here. For example, you might want to argue that proportional representation would "fix" the issues with the electoral collage. (or not, if you are arguing the negative)
Representation and the Electoral College
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Why We Need the Electoral College
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