american legislative process

Explain why incumbents tend to have an advantage in the electoral process. Be sure to include: Institutional trappings, Political/financials advantages, and Ect. Give/explain a contemporary example of a race in the 2014 Midterm or the 2016 Election, where an incumbent took the win from a challenger. APA FORMAT, 4 PAGES, 4 REFERENCES. ( this paper is for the american legislative process )