At a glance, my 1st reaction was "don't be ridiculous".
Then, I stopped to think a bit.
All law and government are force, and threat of force. This is a fundamental truth. All legislation is force, because ultimately that is what it is backed by, from capital crimes to traffic tickets force is the means used to make refuseniks comply... and we haven't even mentioned war yet.
Therefore, voting is force. Yes, it is... it is choosing who will make these decisions on your behalf; chosing who will decide when we as a society collectively apply force and violence.
Even regulatory decisions can come down to life for death.... like how many parts-per-billion contaminants we allow in drinking water will determine how many sensitive/allergic people may sicken or die from same.
So in a sense, voter fraud is an unlawful misapplication of governmental force, or at least an attempt to subvert the accepted legal process for determining when where and how we will apply force... which determines who will die and who will live, btw.
In that sense, it is almost comparable to murder.... at least, in a theoretical fashion.
But theory and reality are not the same... I'd find it hard to support death for voter fraud unless we're talking about orchestrated mass fraud causing an important election to go awry.