Why do you need voter ID?
If I go to the polling station in the UK, I could bring along an ID, a passport, a birth-certificate, a drivers-license and 6ft-tall-portrait of myself in oils and I still wouldn’t be able to fraudulently vote because if my name wasn’t on their list, they wouldn’t give me a ballot a paper. They don’t ask for any sort of identification because they have no need to.
Tell me what is to stop someone else from claiming to you and voting in your place? What would stop you from voting with your own vote and going to another polling place and claim to be someone else and vote twice? That is the point of ID. It is to make sure people are who they say they are, so no one can vote using someone else’s vote. It would be fine if it were easy and cheap enough to obtain the required ID and all the things needed to obtain the required ID, unfortunately that isn’t the case right now it seems. If and when it is, I will support requiring an ID to vote.