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.
Unfortunately I am not the original creator of this map, however election results and demographics are provided by every state’s Secretary of State and/or elections office, and is accessible via each state’s respective website. For example, this is the website for Ohio.