These days Voting Rights Bill is a political hot topic and Democrats are pushing to get it passed in the Senate.
It seems most of the Democrats' voters reside in urban areas and are from middle social class with relatively higher education in comparison to Republicans' voters that are mostly from rural remote areas (see for example a discussion from NYT). So, my assumption is that middle class people living in the large metro areas (which seems are overwhelmingly pro-Democrats) don't need the facilitations offered by Voting Rights Bill to be able to vote . I think people living in the rural areas with lower social class are the ones that mostly benefit from this bill.
If the above statement is relatively true, I believe it doesn't make sense for Democrats to push for Voting Rights Bill to make voting more accessible in the remote areas, while it seems they won't vote for Democrats if they will be given a chance to vote. It's naïve to think that Democrats are trying to pass the Voting Rights Bill just for sake of democracy and goodness. So, I'm thinking there must be a political gain behind this huge effort.
One benefit that I can think of is that Democrats wants to just showoff that they are making progress towards liberal ideas of diversity, inclusiveness, etc. and make vote more accessible to everyone. Honestly, this reason doesn't make much sense to me, because it seems this political fight won't add any new voters to their voters pool and I believe there are much easier ways to keep their current voters in-place if this effort is to keep current voters loyal.
So my question is that: if Democrats probably will not get a huge political benefit from the Voting Rights Bill, so why they are pushing for it? They are so eager to get it done that they somehow wants to take the risk of changing filibuster rules, which might have consequences when GOP would brings some of their bills to the Senate's floor (see it here for example)
I hope someone can explain it more or shed light on the point that I'm missing here.