you can read in my other response but the short answer is: post a bond equal to X weeks salary to vote, bond is held for duration of those elected people's time and if they run a deficit the first hit comes off the posted bond before the country starts taking on debt. If you want to vote again next time post more money to top yourself up.

My idea is to apportion costs to the voter's choices (you want lobster, you pay for lobster), and/or hamstring the ability to move and immediately get access to voting in the new place's elections.