This problem should have been caught when she filed to run for election, not days before the voting. Once again, we pay someone to do a job that they can't be bothered doing.
No one is given the job of inspecting filing papers. If it is found out later that a person has misrepresented themselves on it, perjury charges can be brought against them. But someone has to bring the matter to the attention of the state, not the state bringing it to the attention of someone.