Always remember that policy universally is promoted to further the agenda of a given party! Many republican politicians opt for the abolition of early/absentee voting, and democrats the opposite. Bear in mind that these policies are not just ideological rhetoric, but political play, intended to benefit the ruling party rather than the wider people.
Good point! I’ll see if the author has the same map for any previous elections.
Edit: So it seems like the maps were made as a part of a series by u/DustinGibson a while back. As far as I know, he has not posted any other elections.