1. Representation in congressional campaigns: evidence for discounting/directional voting in U.S. Senate elections;Adams;J. Polit.,2004
2. Why Are There So Many Divided Senate Delegations?;Alesina,1991
3. Cooperative Congressional Election Study, 2006; Common Content [Computer File] Release 4: June 20, 2013;Ansolabehere,2006
4. Cooperative Congressional Election Study, 2008; Common Content [Computer File] Release 6: June 20, 2013;Ansolabehere,2008
5. Cooperative Congressional Election Study, 2010; Common Content [Computer File] Release 3: August 10, 2012;Ansolabehere,2010