[cwassert]

This will not prevent big money from influencing politicians through various means.

Also a lot of the voter influecing is done through almost invisible campaigns such as the "carbon footprint" or neo-liberal content in tv soaps and the like.

[precommunicator]

In Poland political parties are funded mostly from country's budget (depending on last election results), not from donations. Donations are only allowed from normal people, not from corporations. PAC-s equivalent are rare.