They messed their sample up, only 28% are Democrats compared to 32% Republican and 40% Independent
No, that's the party ID numbers, which you really shouldn't try to unskew.
Meh...that's usually the line, but that's also because it is usually conservatives who fail to understand that Democrats have outnumbered Republicans in terms of party ID in every presidential election since at least the 1950s* (and likely much longer than that).
*2004 was a tie
So should we unskew this poll?
Of course, Trump is ahead.
Unskew this not the 24 day WaPo poll