How Do We Improve The Candidates We Get?

Kevin at The Smallest Minority takes a cynical look at politics. There was a time when public service was considered a duty and some politicians served even though they didn't want to. We need to do something to make that happen more often. And figure out a way for voters to get the chance to elect honest men like Washington, Lincoln and Truman more often. Maybe we could select candidates for some offices randomly. Any ideas?