UPDATE. Wisconsin makes great progress in cracking The Case of the Quadrennial Democrats

Source:  Wikipedia (presidential, gubernatorial 2010, 2014,, 2018)

2014-2018 increase in Democratic vote totals:  18%
2014-2018 increase in Republican vote totals:    2.7%

2008-2010 drop in Democratic vote totals:  40%
2008-2010 drop in Republican vote totals:    8%
2012-2014 drop in Democratic vote totals:  31%
2012-2014 drop in Republican vote totals:  11%
2016-2018 drop in Democratic vote totals:  4%
2016-2018 drop in Republican vote totals:  8%


Original  Election Day post, "Is this the year we solve The Case of the Quadrennial Democrats?", starts here.

Related posts:
The Case of the Quadrtennial Democrats (2016 series covering all 72 Wisocnsin counties)