Well maybe....
This "Atlantic" article reverses some expectation.
http://www.theatlantic.com/politics/archive/2013/06/how-the-voting-rights-act-hurts-democrats-and-minorities/276893/But it would be a mistake to think that, though many Republicans want to see Section 5 struck down, they oppose other sections of the Voting Rights Act. Quite the contrary: The GOP has found the VRA to be a great ally. It turns out the act, as traditionally applied, has helped the party win a great number of legislative races. It also has become a potent obstacle to the Democrats retaking the U.S. House of Representatives.
Even more puzzling , it was written by a Democrat cheerleader. He seems to think that Republicans are not as good as Democrats , but are generally better at math.
Hehehehehe..... he is certainly half right.
This explains the oddity of 2012, when the Democrats won the most votes nationwide in House races but still ended up with a minority of seats.
Could this be the real reason that Republicans wrote the VRA in the first place?