Abstract: The right to vote is fundamental to democratic citizenship; it is one of the most important badges of political and legal equality. However, we deny it to children, generally with minimal discussion about their lack of political capacity. After exploring various conceptions of “political capacity” as offered by Schrag, Cohen, and Chan and Clayton, I launch the Symmetry Argument, which is that whatever level of capacity we use for the disenfranchisement of children should be used in symmetrical fashion to disenfranchise the elderly. If we don’t disenfranchise the elderly, but we do disenfranchise children, we must find a good reason why we displace that symmetry. I discuss such arguments and show why they can be refuted or disregarded.