Some pointers for 2020 presidential:
Ohio and Florida show overall Republican flavor - good news for Republicans
Pennsylvania, Colorado, Nevada maybe Iowa showing overall Democrat flavor - good news for Democrats
Shocking high continued support for Republicans in rural areas - look at the little counties in Texas, for example (80 to 90% for Cruz), that’s a base!
Exurbs are interesting: they talk about this being Trump country but not so fast. The two most exurban districts in Illinois were Democrat upsets last night (Roskram and Hultgren losses). Same thing in outer Orange County and Simi Valley, CA (e.g. Rohrabacher loss). Depends on where the exurbs are located. Even the exurbs north of Richmond, VA (Brat loss), as well as exurbs south of Miami were Democratic pickups.
It may be the exurbs that will be decisive factor in 2020.