That's kind of the whole fucking point of democracy, you keep voting. Forever. There is no "one last vote." If you don't like voting, don't vote. But don't complain about the winners and losers then, as you did absolutely fuck all
But... I didn't get the result I wanted last time. It kind of seems like the whole system is made of corporate crooks. If I threaten to not vote at all until they stop being crooked, surely they'll be impacted by that, and all of a sudden there'll be candidates worth voting for. By magic.