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If this is done, you certainly cannot charge for the necessary identification, and you must make it relatively easy for someone to obtain. Otherwise you essentially have a voter tax.
This is essentially the outcome of most existing voter ID laws in the US, especially to discriminate against minorities.
There's no evidence that they prevent voter fraud.
Voter fraud has not had any impact since the late 19th century.
We have a secret ballot. If one were to vote fraudulently how would their vote be negated from the total without discarding someone else's legitimate vote by accident? It is easier to stop a fraudulent vote from going into the pool then to fish the fraudulent vote out.