Not All Rights are Created Equal
Republican politicians refuse to do anything that could be interpreted as limiting the 2nd Amendment, but they have no such compunction going after voter rights over a much smaller issue.
I'm comparing different time scales here, but I think the magnitude of difference is clear. Here are the sources for these, as well as another set of resources on voter fraud.
I would recommend calling your elected representatives to ask them to address the federal loophole that ignores criminal background checks for gun purchases online and at gun shows; states with expanded background checks have been shown to have fewer cases of suicides, partner violence, and deaths of cops in action by gun.