When a woman was first shown in a video of rigging during the April 2011 election in a southern state in Nigeria which is accessible from this link: Election Rigging in Southern Nigeria another video has emerged of another disturbing massive rigging by under-age (children) in a northern state of Nigeria. While some amount of money were giving to the poor riggers, women and children mostly, in the presence of electoral officers include youth corps members, it is difficult to determine how the judiciary would handle the case of those massive riggings.
[youtube=http://www.youtube.com/watch?v=lVcIFa8Wdgw]
So far more video recording, some amateurish because of they were recorded by mobile phones, are being circulated.

Can we still describe the elections as free and fair in the face of the unfolding developments?

That is Nigeria and Nigerians for you: the more you see the less you understand. If we allow the politicians to have their ways we must ensure that we don’t loss our sense of reasoning to love ourselves regardless of our social, political and religious background.