Democratic shift in special election vs 2016 (2012):

2017 elections: 10% (7%)
2018 elections: 27% (12%)

(Waves generally get larger as time goes on)https://t.co/cfhtP3qoX0 https://t.co/eEumjXfz9W

— G. Elliott Morris (@gelliottmorris) February 7, 2018