Polarization in the States

Innovative research into applying ideological mapping techniques that work well for congress to state legislatures lets us finally answer the question: Do ideological patterns in state legislatures resemble those in congress? The answer: It depends! California and Michigan display Beltway-esque polarization patterns. Florida, however, looks very different and Pennsylvania is pretty different as well. So far, those are the only states this has been done for.

If you want the full explanation, see this PDF of Boris Shor, Christopher Berry, and Nolan McCarty "A Bridge to Somewhere: Mapping State and Congressional Ideology on a Cross-Institutional Common Space."

4/21/07 8:26PM del.icio.us this incoming links

Comments

Sweet. The general lack of poli. sci. research on state/federal differences has always flummoxed me.

Posted by: Aaron S. Veenstra on April 21, 2007 11:10 PM

The Pennsylvanian scores are also amusingly the nearest to being symmetrical. I suppose that comports with my native commonwealth being a notorious swing state.

That paper seems as though it is terribly interesting and I wish I had run across it at some time other then one when I ought to be in bed.

Posted by: Paludicola on April 22, 2007 02:17 AM

Over what period of time is this data taken? Here in Florida there has been a remarkable outbreak of cooperativeness and even common sense in our state legislature, which a few short years ago was a nation laughingstock. The overlap the chart shows could be due to some recent accomplishments.

Posted by: JonF on April 22, 2007 08:37 AM

This is the worst blog post ever. Neither your post nor any of the three links provides an ordinary-language summary of what is being talked about. What's on the x-axis and what's on the y-axis, for example?

Oh, yeah, "density" and "common space". Thanks.

My guess is that a forty-word summary would do the job, and if I put in twenty minutes I might be able to write it myself, but I just don't care enough.

Congrats to those who were able to get something out of it, though.

Posted by: John Emerson on April 22, 2007 10:10 AM

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