Over the past two decades, campaigns for judicial elections in the U.S. states have become larger in scale. We analyze the impact of this development on voters' choices between candidates. Using a series of post-election surveys of voters in fourteen contests for the Ohio Supreme Court over twenty years, we probe the relationship between the amount of media coverage and campaign spending in a contest and the level of partisan voting. We find that in a state in which candidates' party affiliations are not listed on the ballot, high-visibility contests for judgeships produce more partisan voting than do lower-visibility contests. That effect was more pronounced for voters with greater political knowledge. These findings indicate that, at least in one state setting, high-visibility judicial contests have the effect of making more voters aware of basic information about the candidates, and that information informs their voting choices.