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
Oregon is winner take all. The state can be Dems 51%, Rep. 49%. Oregon is blue in metro areas and red as can be in most of state. The red voter NEVER GETS COUNTED. It would be much fairer (lib term) if my vote got counted.
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
This appears to be missing 7 congressional districts as the totals do not add up to 435. Even if these missing congressional district went for Trump, he would have lost 272 to 265.
But, the election would have played out a lot differently with different math in play.
The chart does not take into account the awarding of 2 EV for the popular vote of each state. Since the R’s win the majority of the states, usually 30+ that would make the difference.
Again, this would actually make it more constitutional and more to the framers intent, (if you can say). Unlike the opposite mob rule control of a popular vote that the dems want. The majority of Americans would actually have a vote that counts but yet still be protected from the mass hoards of city voters. Small states with small population still get a vote plus the 2 EV (for the senators so to say) and the large populations still get a voice too.
Eliminating vote fraud for a generation is still the biggest plus to the whole deal.