Ezra Klein has a good quick rundown of the various attacks on voters that the GOP has come up with over the course of 2011 in the course of shining a bright light on the hypocrisy that the Republican presidential primary candidates are now displaying after many of them failed to register to be included on the Virginia primary ballot...
The open secret of these laws is that they hurt turnout among Democratic constituencies such as students, minorities and low-income voters, which helps Republican politicians get elected. Virginia is just an odd case where restrictive ballot-access laws are hurting Republican politicians.Read the whole thing for the details and links to other articles. You could also take a look at this recent post from Charlie Pierce about Mitch McConnell's belief that democracy does not work.