4 ms·
One major factor that needs to be considered when looking at these data is that the electoral districts (the unit of measure here) were redrawn with significant
by pge 7y ago
One major factor that needs to be considered when looking at these data is that the electoral districts (the unit of measure here) were redrawn with significant changes after the 2010 census (taking control of state legislatures in order to redraw the maps to be much more favorable was a key component of Republican strategy). As a result conparing 2008 and 2018 as if those congressional districts were the same may be skewed.
- vitus 7y agoYeah. I was disappointed to see that there wasn't a comparison between 2011 and 2013 to try to identify how big that effect was. Wikipedia has images that can give a vague idea of the geographic shift (which I like especially because they show which districts flipped in the election). It looks to me that some of the major shifts were independent of gerrymandering (e.g. Dakotas becoming solidly Republican, Dem control solidifying over coastal Pacific and around NYC), while others might have been tied to it (e.g. compaction of Dem control in UT, AL, MS). 2010 election: https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/2010_House_elections.svg/400px-2010_House_elections.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/20... 2012 election: https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/US_House_2012.svg/400px-US_House_2012.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/US... 2018 election: https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/US_House_2018.svg/400px-US_House_2018.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/US...