https://www.rollcall.com/news/politics/house-seats-you-think-cant-flip-but-mightStuart Rothenberg's list of 28 seats the Democrats might win beyond the 23 R-held Clinton districts:
11 districts that Trump won but Obama won twice:
IL-12
IA-1, IA-3
ME-2
MN-2
NJ-2, NJ-3
NY-1, NY-2, NY-19, NY-21
6 districts that Obama won once but Trump won with less than 50%:
IL-13, IL-14
MI-11
NE-2
PA-8
WA-3
And one that Obama won once and Trump won with just over 50%:
MI-8
3 districts to watch based on high-quality D challengers:
KS-2
KY-6
UT-4
7 more that could be competitive based on past performance:
NJ-11
NY-22, NY-23
OH-10
PA-15, PA-16
VA-2