File:Evolution of average Republican-Democrat polarization in the US Congress.svg

Original file (SVG file, nominally 504 × 504 pixels, file size: 21 KB)

This is a file from the Wikimedia Commons. The description on its description page there is shown below.

Commons is a freely licensed media file repository. You can help.

Summary

Description	English: Evolution of the difference between the averages of Republican and Democratic members of the US House and Senate since 1879, the end of Reconstruction, on the Liberal-Conservative (-1 = Liberal to +1 = Conservative) scale ("nominate_dim1") in the DW-NOMINATE data from the Voteview project initiated in 1989-1993 by Keith T. Poole and Howard Rosenthal when they were both on the political science faculty at Carnegie Mellon University.
Date	11 October 2024
Source	Own work
Author	DavidMCEddy

I, the copyright holder of this work, hereby publish it under the following license:

You are free:

Under the following conditions:

attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	03:01, 12 October 2024		504 × 504 (21 KB)	DavidMCEddy	Uploaded own work with UploadWizard

The following page uses this file:

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Width	504
Height	504