I'm disappointed that UT-04 isn't on the list. It's winnable with the right candidate. Someone who has won countywide in Salt Lake County (a plurality of the district's popularity, or even an outright majority), could win by enough there to offset expected landslide losses in Utah County, Juab County, and Sanpete County, the other three portions of the district.
There are multiple Democratic county officials who could feasibly win the seat.
You must win Salt Lake county by truly a lot. Only in an extremely strong wave probably...
Actually, Democrats nearly held this seat in 2014, hardly a Democratic wave.