Of the nation's current 435 House districts, 226 voted for Trump in '16 and 209 voted for Clinton.

Based on my initial analysis, Biden carried 216, Trump carried 208 and 11 remain too close to call. But it's pretty clear to me Biden is on track for a narrow majority.

Here are the 12 Trump '16 districts I can say with confidence Biden has flipped blue so far:

#AZ01
#GA06
#GA07
#MN02
#NE02
#NH01
#NJ05
#NJ11
#PA17
#TX24
#VA02
#VA07

And the two Clinton '16 districts Trump has flipped red so far:

#FL26
#TX23

Here are the 11 districts that I'm still not 100% certain about ('16 winner):

#CA48 (Clinton)
#IL14 (Trump)
#IL17 (Trump)
#MI11 (Trump)
#NV03 (Trump)
#NJ03 (Trump)
#NY18 (Trump)
#NY19 (Trump)
#OH01 (Trump)
#TX15 (Clinton)
#TX28 (Clinton)

I'd be open to anyone's math on these.

If I were to guess based on what I've seen/heard, I'd guess Biden in #CA48, #IL14, #MI11, #NV03, #NY18, #NY19, #TX15 and #TX28, and Trump in #IL17, #NJ03 and #OH01.

That would add up to Biden 224, Trump 211 nationally - a 15 district net anti-Trump swing vs. 2016.