Is there an electoral map by congressional district?
Going back to 1992....
Of the 428 districts in states which HAVE districts (7 do not, plus DC), the elections of 2000, 2004, 2012 and 2016 would have been won by the GOP if the electoral votes had been split by district and not winner-taker-all.
The GOP would still have lost in 1992, 1996, 2008 and 2020.
As one example, here is a listing of results by district for 2020. You can get any other year too (back to 1960):
2020 presidential election results by congressional district