Ultimately, electoral laws exist and have a purpose. If the law was broken, then it must be investigated and the tainted election must be re-run. These laws are designed to prevent exactly what is alleged to be happening, so it is not a case of misusing power.
> If the law was broken, then it must be investigated
Yes, of course.
> and the tainted election must be re-run
No, not at all. First because there is no law that even mentions this possibility - courts should not get to invent rules and regulations.
Secondly because there is no time to take correct decisions of this nature during the short election cycle, and ensure that evidence is properly gathered, rights are respected, and so on. The standard of evidence used to take this decision is barely good enough to charge someone.