A proposed amendment would allow the city council to decide that certain city elections be conducted solely by mail. But voting is a sacred right in democracies, one that has always been exercised by voting in person and not by mail. Ttherefore, voting by mail should not be allowed, and the proposed amendment should be rejected.
The reasoning in the argument is most vulnerable to criticism on the grounds that the argument presumes, without providing justification, that if citizens have always had a certain legal right, they will continue to have that right in the future.