Law Library contains paper titles up to 2005. Online access for more recent issues are available via HeinOnline Law Journal Library and Mary Ann Liebert Journals Online
To find articles about election law, try some of these sources:
Index to legal periodicals, court decisions, legislation and more from the United States and Commonwealth countries. Full text coverage for selected periodicals. Law books indexed beginning in 1993.
UW-Madison's catalog contains an article search feature that can be helpful to find scholarly material on a range of subjects. Note that it can be helpful to be narrow and utilize filters when using this search, just searching "election law" in this feature can yield almost 7 million results.