The zip files on this site contain data sets in a variety of formats. Our goal is to provide you with as many options as possible so that you are not restricted to any one particular piece of software or operating system.

These data sets accompany Working with Political Science Research Methods 4th edition

Human Development data ( Human Development.zip)

Social Vote data ( Social Vote.zip)

State data ( State.zip)

State Legislatures data ( State Legislatures.zip)