Here's a good article about voter suppression. This is an extremely serious prolific problem, often targeting minorities specifically. Republican states have deliberately been restricting access to voting for the past 2 decades and have succeeded in having hundreds of vote restriction bills passed. They are still actively doing this today.
Even if it was, the most vulnerable working people wouldn't get it off. Sure we can make it a holiday but we should also allow people to early vote the entire week leading up to it and also allow mail-in ballots. That would also reduce the line problem that we see in some places.