Environmental Policy and Party Divergence in Congress

  title={Environmental Policy and Party Divergence in Congress},
  author={Charles R. Shipan and William R. Lowry},
  journal={Political Research Quarterly},
  pages={245 - 263}
The question of whether parties converge or diverge over time has attracted a great deal of theoretical and empirical attention. In this article we make two contributions to this literature. First, rather than looking at general measures of ideology, we examine a specific policy area-environmental policy to see whether the parties have diverged or converged. We utilize ratings produced by the League of Conservation Voters to obtain measures of congressional voting. Unlike other issue-specific… 

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