According to our colleagues in Career services, one of the best resources on this subject is offered by The Career Services Office at Vermont Law School since1994.
VLS created the guide because students were interested in serving as judicial law clerks across the country and rapidly discovered that each state hired law clerks in its own special way. VLS then began selling the guide because we assumed that the information would be beneficial to other students as well.
You can access the guide using the UNH Law credentials provided by Career Services.
Please use other resources in this guide to scope out judges. There are also judicial directories on premium and the open web.