"And of course the means of voter suppression are everywhere. John Ashworth, in a superb overview of the current standing of CPA implementation, points out not only the difficulties faced by southern Sudanese (as many as 2 million) trying to register in northern Sudan, but how much easier it will be to rig the quorum numbers than the percentage voting for secession:

"Rigging the simple majority would be extremely difficult, as all indications are that a huge majority of voters will choose secession. However, the 60% quorum would be easier to rig. One tactic would be to make it difficult for registered voters to turn out, due to insecurity, transport and other problems. During the elections in April 2010 many voters found it difficult to cast their vote due to incomplete lists, lists being sent to the wrong polling stations, and other bureaucratic and logistical issues. These could conceivably be deliberately exacerbated in the referendum."