Should there be judicial performance evaluation for federal judges? Campaign finance limits for state judges?

Most states have commissions which evaluate the performance of state judges. Would it be a good idea to institute similar performance review of federal judges? For judicial elections, are campaign contribution/spending ceilings constitutional? What about bans on candidates personally soliciting contributions? There are the topics of a symposium issue of the Denver University law review, including a foreword by Justice O'Connor. Comments on these topics are very welcome--but only after the commenter has read at least one of the articles in the symposium.