Most people think money in politics is a bad thing. Incumbents and challengers lament how much it takes to mount a campaign. They say they hate to be constantly asking people for money. What's funny is that the same people complain that not enough people are involved in the political process. If more people got involved, perhaps more money would be contributed.
Any answer is arbitrary.
We have to look at this issue in terms of basic principles. When we do that, we easily see that the fuss about campaign finance is a clear case of worrying about symptoms while neglecting causes. It is a kind of market. Someone is buying something, and that can occur only when there is someone on the other side of the counter selling something that the buyer wants. The problem with the usual proposals for campaign finance is that they deal with the demand side and ignore the supply side.