Potentially losing your job would be part of the risk/sacrifice a potential candidate would have to accept. Yes, it would be difficult for someone living paycheck to paycheck to do this. Ideally, election reform like this would go hand in hand with economic reform that leads us to a society in which much less people are living paycheck to paycheck. This could happen easily if we start electing real people instead of rich people only.
One party gets into power and throws shit everywhere. The other party gets into power and cleans as much shit as they can, but it’s on the ceiling and seeping into the walls. They never get all of it. Often they only get a small amount of it. It’s never the shit thrower’s fault though. Both parties are covered in shit.