I think ALL elections should be funded with 100% private money. The federal and state governments give way too much to candidates. I also think it should be illegal for the president/vice president to campaign for others while in office. How many tens of millions does it cost the tax payers For Obama to campaign for Murray or Kitzhaber? Airforce 1&2 in the air, support staff, motorcades etc. How much in jet fuel alone? Bush, Clinton, Obama, they all do it, and it's wrong. Those other campaigns do not pay those costs no matter what they claim.
I would like to see a per person/corporation/union limit on campaign contributions. Unions have too much political buying power, that needs to end. Unions need to be outlawed, but that's another topic. Sure corporations spend a lot, but they usually spend on both sides so they have favor no matter who wins.