This is one of the most blatant admission yet, as explained in the Huffington Post video:
Republican campaign consultant Scott Tranter appeared on a panel Monday hosted by the Pew Center on the States to discuss the long lines and voter ID controversies that plagued the 2012 election. In his comments, Tranter seemed to imply that he believed these issues were helpful to Republicans and should be pursued for that reason.
"A lot of us are campaign officials -- or campaign professionals -- and we want to do everything we can to help our side. Sometimes we think that's voter ID, sometimes we think that's longer lines -- whatever it may be," Tranter said with a laugh.