Most institutions have elective information available on their websites.
Senior medical students are a valuable resource. If you are interested in doing an elective out of the country or an Indian Health Service you need to be doing that now. Best way to get a feel for the specialty. May help your residency chances, to see and be seen. Blocks 4 thru 8 are good times for away electives to check out residency programs, i.e. see and be seen.