the downsize of a write-in is that you need a litarate population

(edit: haha, just noticed my spelling mistake - so I'm neither a proper voter)
My questions, mainly @ Platapus are:
1. Does the name of the write-in candidate has to be fully spelled or is just the common used first- and lastname sufficent? Could be funny with hispanic candidates if you have to spell out the whole names...
2. What if someone has a popular name, how can the voter intention be sorted out? Or would there be a second ballot (or mudwrestling) between all candidates with the same name if a "Jane Smith" would win?
I know what common sense would tell me, but (voting) laws and sense are often a contradiction