Writer Mark Vanhoenacker, who lives in New York state, has this interesting article in Slate about U.S. ballot design, and why so many U.S. ballots are confusing. He compares some U.S. ballots with European ballots, and a sidebar lets readers look at ballots from some other countries.
Many states do have clear ballots. It happens that New York and New Jersey have the poorest ballot design of any states, at least relative to the part of ballots that includes candidates. Thanks to ElectionUpdates for the link.