If anyone is trying to justify the punishment of an entire population of people because of whom they voted for, the exact same argument can be used to justify Hamas firing rockets into Israel. It's a slippery slope. The people of Israel have consistently voted for a government that has held the Palestinian people under military occupation for more than 40 years.

So using the argument that it's ok to wage war on a civilian population because of the way they vote, that would mean that it's ok for Hamas to target civilians in Israel.

There is nothing the Palestinians can or could do to make the government of Israel stop its ethnic cleansing (and in the case of Gaza, the ongoing genocide) of their population except to leave or lay down and die on their own. Because that is the goal, and it has always been the goal, and the government of Israel has no intention of stopping until the last Palestinian and Arab Israeli is gone.