Fairy dust.
You want change, get rid of the massive centralized power that makes elections so damn important in the first place, and corrupts almost anyone who actually gets into office.
If you run a political campaign, you get two choices: Be rich enough to pay your own way, or take contributions. The real answer is complete transparency in contributors, but nobody in politics wants THAT.
There probably already is a party out there that does not use campaign money. We've just never heard of it.