if somebody dangles 6-7 figure checks in front of many people, those people will find that their former concept of "livable wage" has suddenly been revised upwards.
If a politician is honest they can be honest within the lobbying framework or outside of it, the issue I think is making it so a honest politician with no access to extra funds can compete on issues against a well funded opponent (meaning getting people to know who they are without having to buy tons of ads): this can only happen if election campaigns are extremely regulated.
Doing that would mean things like no ads for anybody ever, only exposure via live debates, fixed identical travel schedule for everybody with access to the same rallies in terms of facilities etc. etc.
Even with all of this I am not sure it would work in the current social-media society, because as things stand now if you are well funded you could easily drown your opponent(s) on social media just by buying comments/influence and regulating those seems pretty much impossible (how do you distinguish between a genuine groundswell of support and a paid-for one?)