Senators’ ideal points against Obama vote

March 18, 2010
By

[This article was first published on simon jackman's blog » R, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

I added another plot to the output generated by my overnight ideal point scripts: a scatterplot of estimated Senate ideal points against Obama vote share in their state (color coded by party, local linear regression overlays by party, labels for some big residuals).

I suppose I’m surprised by the way that the loess curve for the Democrats flattens out to the left of 50% Obama vote share. It is an interesting picture to stare at and speculate as to why that is the case: party whipping by the Dems, agenda control (distorting our estimates of the ideal points of Dems in ranks, say, 35-60), lack of fit by the one-dimensional model, some combination of all this, something else…

Outliers: Coburn (R-OK), Demint (R-SC) and Ensign (R-NV) among the Reps; Lieberman (really a Dem?, and a positive residual), and two big negative Dem residuals, Brown (D OH) and Harkin (D IA).

To leave a comment for the author, please follow the link and comment on their blog: simon jackman's blog » R.

R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.



If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Tags: ,

Comments are closed.

Search R-bloggers

Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)