Bicameralism in legislatures affects both the legislative process and partisan competition. In the United States, divided partisan control of Congress has been found to lead to interparty logrolls and increased budget deficits. In parliamentary systems, it is generally assumed that similarly...

Bicameralism in legislatures affects both the legislative process and partisan competition. In the US, divided partisan control of Congress has been found to lead to interparty logrolls and increased budget deficits. In parliamentary systems, it is generally assumed that similarly divided...

One of the most widely discussed phenomena in American politics today is the perceived increasing partisan divide that splits the U.S. electorate. A central contested question is whether this diagnosis is actually true, and if so, what is the underlying cause. We develop a model that relates the...