The financing of judicial campaigns is a form of earwigging. Political forces, whether they be individuals or groups, seek the election of judicial candidates who will decide cases in certain favorable ways to the individual or group. In our electoral process money is speech. Political forces therefore spend money to get certain people elected. These forces do not spend speech money out of the goodness of their hearts. They expect a certain form of "speech" from the people they get elected. The speech they expect is speech from the benches of our judicial system -- the super-legislatures of today's "democracies." It is just human nature.
Judicial campaign financing is a form of earwigging.